40 men can complete a piece of work in 15 days. 20 more men joined them after 5 days they start doing work. How many days will be required by them to finish the remaining work ?

${\text{7}}\frac{2}{3}{\text{ days}}$$

${\text{6}}\frac{1}{5}{\text{ days}}$$

${\text{8}}\frac{1}{4}{\text{ days}}$$

${\text{6}}\frac{2}{3}{\text{ days}}$$

A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be complete in ?

${\text{15}}\frac{1}{3}{\text{ days}}$$

${\text{14}}\frac{1}{3}{\text{ days}}$$

${\text{15}}\frac{1}{3}{\text{ days}}$$

${\text{16}}\frac{1}{3}{\text{ days}}$$

${\text{18}}\frac{2}{3}{\text{ days}}$$

A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work ?

${\text{ 3}}\frac{1}{3}{\text{ days}}$$

${\text{ 4}}\frac{4}{5}{\text{ days}}$$

${\text{ 3}}\frac{1}{3}{\text{ days}}$$

${\text{ 5}}\frac{1}{4}{\text{ days}}$$

${\text{2}}\frac{2}{3}{\text{ days}}$$

A does 20% less work than B. If A can complete a piece of work in$$7\frac{1}{2}$$ hours, then B can do it in ?

${\text{5}}\frac{1}{2}{\text{ hours}}$$

${\text{6}}\frac{1}{2}{\text{ hours}}$$

${\text{5}}\frac{1}{2}{\text{ hours}}$$

A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be completed in ?

${\text{15}}\frac{2}{3}{\text{ days}}$$

${\text{14}}\frac{1}{3}{\text{ days}}$$

${\text{15}}\frac{2}{3}{\text{ days}}$$

${\text{16}}\frac{1}{3}{\text{ days}}$$

${\text{18}}\frac{2}{3}{\text{ days}}$$

A can do a certain job in 12 days and B is 60%more efficient than A. The B can do the same piece of work in ?

${\text{6}}\frac{1}{4}{\text{ days}}$$

${\text{7}}\frac{1}{2}{\text{ days}}$$

${\text{6}}\frac{1}{4}{\text{ days}}$$

A can do $$\frac{1}{3}$$ rd of a work in 5 days and B can do the do $$\frac{2}{5}$$th of this work in 10 days. Both A and B, together can do the work in ?

${\text{ 7}}\frac{3}{8}{\text{ days}}$$

${\text{8}}\frac{4}{5}{\text{ days}}$$

${\text{9}}\frac{3}{8}{\text{ days}}$$

452 + Mcqs in Time and Work Page 6 McqOptions

251.	12 men can do a piece of work in24 days. How many days are needed to complete the work, if 8 men do this work ?
A.	8 days
B.	6 days
C.	8 days
D.	2 days
Answer» C. 8 days

Discussion

252.	X can copy 80 pages in 20 hours, x and y together can copy 135 pages in 27 hours. Then y can copy 20 pages in ?
A.	0 hours
B.	4 hours
C.	hours
D.	2 hours
Answer» B. 4 hours

Discussion

253.	Two worker A and B are engaged to do a piece of work. A working alone would take 8 hours more to complete the work that when work together. If B worked alone, would take $${\text{4}}\frac{1}{2}$$hours more than when working together. The time required to finish the work together is = ?
A.	hours
B.	houras
C.	hours
D.	hours
Answer» E.

Discussion

254.	12 monkeys can eat 12 bananas in 12 minutes. In how many minutes can 4 monkeys eat 4 bananas ?
A.	minutes
B.	0 minutes
C.	2 minutes
D.	minutes
Answer» D. minutes

Discussion

255.	A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternatively, with A beginning, then the work will be completed in ?
A.	0 days
B.	1 days
C.	days
D.	2 days
Answer» C. days

Discussion

256.	40 men can complete a piece of work in 15 days. 20 more men joined them after 5 days they start doing work. How many days will be required by them to finish the remaining work ?
A.	${\text{7}}\frac{2}{3}{\text{ days}}$$
B.	${\text{6}}\frac{1}{5}{\text{ days}}$$
C.	${\text{8}}\frac{1}{4}{\text{ days}}$$
D.	${\text{6}}\frac{2}{3}{\text{ days}}$$
Answer» E.

Discussion

257.	A can do as much work as B and C together can do. A and B can together do a piece of work in 9 hours 36 minutes and C can do it in 48 hours. The time in hours that B needs to do the work alone, is ?
A.	8 hours
B.	4 hours
C.	0 hours
D.	2 hours
Answer» C. 0 hours

Discussion

258.	Dinesh and Rakesh are working on an Assignment, Dinesh takes 6 hours to type 32 pages on a computer, while Rakesh takes 5 hours to type 40 pages. How much time will they take working together on two different computers to type an assignment of 110 page ?
A.	hours, 30 minutes
B.	hours
C.	hours, 15 minutes
D.	hours, 25 minutes
Answer» D. hours, 25 minutes

Discussion

259.	A takes 10 days less than the time taken by B to finish a piece of work. If both A and B can do it in 12 days, then the time taken by B alone to finish the work is = ?
A.	0 days
B.	7 days
C.	0 days
D.	5 days
Answer» B. 7 days

Discussion

260.	A can do a piece of work in 5 days less than the time taken by B to do it. If both of them togethertake $${\text{11}}\frac{1}{9}$$days, then the time taken by B alone to do the same work (in days ) is ?
A.	5 days
B.	0 days
C.	5 days
D.	0 days
Answer» D. 0 days

Discussion

261.	18 men can complete a piece of work in 63 days. 9 women take 189 days to complete the same piece of work. How many days will 4 men, 9 women and 12 children together take to complete the piece of work if 7 children alone can complete the piece of work in 486 days ?
A.	4 days
B.	3 days
C.	6 days
D.	1 days
E.	one of these
Answer» E. one of these

Discussion

262.	A labourer was appointed by a contractor on the condition he would be paid Rs. 75 for each day of his work but would be, fined at the rate of Rs. 15 per day for his absent. After 20 days, the contractor paid the labourer Rs. 1140. The number of days the labourer absented from work was ?
A.	days
B.	days
C.	days
D.	days
Answer» D. days

Discussion

263.	A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be complete in ?
A.	${\text{14}}\frac{1}{3}{\text{ days}}$$
B.	${\text{15}}\frac{1}{3}{\text{ days}}$$
C.	${\text{16}}\frac{1}{3}{\text{ days}}$$
D.	${\text{18}}\frac{2}{3}{\text{ days}}$$
Answer» B. ${\text{15}}\frac{1}{3}{\text{ days}}$$

Discussion

264.	A can write 75 pages in 25 hours. A and B together can write 135 pages in 27 hours. In what time can B write 42 pages ?
A.	7 hrs
B.	9 hrs
C.	1 hrs
D.	3 hrs
Answer» D. 3 hrs

Discussion

265.	A can do three times the work done by B in one day. They together finish $$\frac{2}{5}$$of the work in 9 days. The number of days by which B can do the work alone are ?
A.	20 days
B.	00 days
C.	0 days
D.	0 days
Answer» E.

Discussion

266.	8 men can complete a piece of work in 20 days. 8 women can complete the same work in 32 days. In how many days will 5 men and 8 women together complete the same work ?
A.	0 days
B.	2 days
C.	4 days
D.	6 days
E.	one of these
Answer» E. one of these

Discussion

267.	If 2 men or 6 women or 4 boys can finish a work in 99 days, how many days will one man, one woman and one boy together take to finish the same work ?
A.	4 days
B.	4 days
C.	4 days
D.	04 days
E.	one of these
Answer» F.

Discussion

268.	If 3 men or 9 boys can finish a piece of work in 21 days, in how many days can 5 men and 6 boys together do the same piece of work ?
A.	days
B.	2 days
C.	4 days
D.	annot be determined
E.	one of these
Answer» F.

Discussion

269.	A can do half of a piece of work in 1 day,where B can do full. B can do half the work as C in 1 day. The ratio of their efficiencies of work is = ?
A.	: 2 : 4
B.	: 1 : 4
C.	: 2 : 1
D.	: 4 : 1
Answer» B. : 1 : 4

Discussion

270.	If A, B and C can complete a piece of work in 6 days. If A can work twice faster than B and thrice faster then C, than the number of days C alone can complete the work is ?
A.	4 days
B.	3 days
C.	2 days
D.	1 days
Answer» C. 2 days

Discussion

271.	A's 2 days work is equal to B's 3 days work. If A can complete the work in 8 days, then to complete the work B will take ?
A.	5 days
B.	2 days
C.	6 days
D.	4 days
Answer» C. 6 days

Discussion

272.	A man is twice as fast as a women and a woman is twice as fast as a boy in doing a work. If all of them, a man , a woman and a boy can finish the work in 7 days, a boy will do it alone ?
A.	9 days
B.	days
C.	days
D.	2 days
Answer» B. days

Discussion

273.	Five men are working to complete a work in 15 days. After five days 10 women are accompanied by them to complete the work in next 5 days. If the work is to be done by women only, then in how many days could the work be over if 10 women have started it ?
A.	0 days
B.	2 days
C.	5 days
D.	8 days
Answer» D. 8 days

Discussion

274.	A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the work. If all the three, working together can complete the job in 24 days, then the number of days, A alone will take to finish the job is = ?
A.	00 days
B.	6 days
C.	5 days
D.	0 days
Answer» C. 5 days

Discussion

275.	A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work ?
A.	${\text{ 4}}\frac{4}{5}{\text{ days}}$$
B.	${\text{ 3}}\frac{1}{3}{\text{ days}}$$
C.	${\text{ 5}}\frac{1}{4}{\text{ days}}$$
D.	${\text{2}}\frac{2}{3}{\text{ days}}$$
Answer» B. ${\text{ 3}}\frac{1}{3}{\text{ days}}$$

Discussion

276.	A does 20% less work than B. If A can complete a piece of work in$$7\frac{1}{2}$$ hours, then B can do it in ?
A.	${\text{6}}\frac{1}{2}{\text{ hours}}$$
B.	hours
C.	${\text{5}}\frac{1}{2}{\text{ hours}}$$
D.	hours
Answer» C. ${\text{5}}\frac{1}{2}{\text{ hours}}$$

Discussion

277.	P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in ?
A.	8 days
B.	4 days
C.	0 days
D.	2 days
Answer» B. 4 days

Discussion

278.	A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How many days will they take if they work together ?
A.	days
B.	0 days
C.	1 days
D.	2 days
Answer» E.

Discussion

279.	A can do a piece of work in 90 days, B in 40 days and C in 12 days. They work for a day each in turn i.e., first day A does it alone, B does it the second day and C the third day. After that A does it for another day, and so on. After finishing the work they get Rs. 240. If thewages are divided in proportion to the work done by them, find what each will get ?
A.	Rs. 24, B Rs. 54, C Rs. 162
B.	Rs. 22, B Rs.50, C Rs. 132
C.	Rs. 26, B Rs. 52, C Rs. 142
D.	Rs. 20, B Rs. 44, C Rs. 182
Answer» B. Rs. 22, B Rs.50, C Rs. 132

Discussion

280.	A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be completed in ?
A.	${\text{14}}\frac{1}{3}{\text{ days}}$$
B.	${\text{15}}\frac{2}{3}{\text{ days}}$$
C.	${\text{16}}\frac{1}{3}{\text{ days}}$$
D.	${\text{18}}\frac{2}{3}{\text{ days}}$$
Answer» B. ${\text{15}}\frac{2}{3}{\text{ days}}$$

Discussion

281.	The labourers A, B, C were given a contract of Rs. 750 for doing a certain piece of work. All the three together can finish the work in 8 days, A and C together can do it 12 days, while A and B together can do it in $${\text{13}}\frac{1}{3}$$days. The money will be divided in the ratio ?
A.	: 5 : 6
B.	: 7 : 5
C.	: 7 : 4
D.	: 6 : 8
Answer» B. : 7 : 5

Discussion

282.	The time taken by 4 men to complete a job is double the time taken by 5 children to complete the same job. Each man is twice as fast as a woman. How long will 12 men, 10 children and 8 women take to complete a job, given that a child would finish the job in 20 days ?
A.	days
B.	days
C.	day
D.	0 days
Answer» D. 0 days

Discussion

283.	The daily wages of A and B respectively are Rs. 3.50 and Rs. 2.50. When A finishes a certain work, he gets a total wage of Rs. 63. When B does the same work, he gets a total wage Rs. 75. If both of them do it together what is cost of the work ?
A.	s. 67.50
B.	s. 27.50
C.	s. 60.50
D.	s. 70.50
Answer» B. s. 27.50

Discussion

284.	A man can do a piece of work in 30 hours. If he works with his son then the same piece of work is finished in 20 hours. If the son works alone then he do the work in ?
A.	0 hours
B.	0 hours
C.	5 hours
D.	0 hours
Answer» B. 0 hours

Discussion

285.	A can do a certain job in 12 days and B is 60%more efficient than A. The B can do the same piece of work in ?
A.	${\text{8 days}}$$
B.	${\text{7}}\frac{1}{2}{\text{ days}}$$
C.	${\text{6}}\frac{1}{4}{\text{ days}}$$
D.	${\text{6 days}}$$
Answer» C. ${\text{6}}\frac{1}{4}{\text{ days}}$$

Discussion

286.	A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in ?
A.	days
B.	days
C.	days
D.	2 days
Answer» D. 2 days

Discussion

287.	A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in ?
A.	6 days
B.	4 days
C.	5 days
D.	8 days
Answer» C. 5 days

Discussion

288.	A and B can together do a piece of work it in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is ?
A.	8 days
B.	4 days
C.	days
D.	2 days
Answer» B. 4 days

Discussion

289.	A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is = ?
A.	0 days
B.	1 days
C.	2 days
D.	4 days
Answer» E.

Discussion

290.	A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If every one gets paid in proportion to work done by them, the amount C will get is ?
A.	s. 50
B.	s. 100
C.	s. 150
D.	s. 200
Answer» B. s. 100

Discussion

291.	A can do $$\frac{1}{3}$$ rd of a work in 5 days and B can do the do $$\frac{2}{5}$$th of this work in 10 days. Both A and B, together can do the work in ?
A.	${\text{ 7}}\frac{3}{8}{\text{ days}}$$
B.	${\text{8}}\frac{4}{5}{\text{ days}}$$
C.	${\text{9}}\frac{3}{8}{\text{ days}}$$
D.	0 days
Answer» D. 0 days

Discussion

292.	18 men or 36 boys working 6 hours a day can plough a field in 24 days. In how many days will 24 men and 24 boys working 9 hours a day plough the same field ?
A.	days
B.	0 days
C.	days
D.	days
Answer» E.

Discussion

293.	Shashi can do piece of work in 20 days. Tanya is 25% more efficient than Sashi. The number of days taken by Tanya to do the same piece of work is = ?
A.	5
B.	5
C.	8
D.	6
Answer» E.

Discussion

294.	A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. In how many days C alone can do the same work ?
A.	days
B.	days
C.	0 days
D.	2 days
Answer» E.

Discussion

295.	A group of workers can complete a piece of work in 50 days, when they are working individually. On the first day one person works, on the second day another person joins him, on the third day one person joins them and this process continues till the work is completed. How many approximate days are needed to complete the work ?
A.	days
B.	days
C.	0 days
D.	1 days
Answer» D. 1 days

Discussion

296.	A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?
A.	.5 days
B.	2.3 days
C.	days
D.	.5 days
Answer» D. .5 days

Discussion

297.	A and B work together to complete the rest of a job in 7 days. However,$$\frac{{37}}{{100}}$$of the job was already done. Also the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work ?
A.	0
B.	5
C.	0
D.	0
Answer» B. 5

Discussion

298.	A can do a piece of work in 12 days and B in 20 days. If they together work on it for 5 days, and remaining work is completed by C in 3 days, then in how many days can C do the same work alone ?
A.	0 days
B.	days
C.	2 days
D.	5 days
Answer» C. 2 days

Discussion

299.	16 men can finish a piece of work in 49 days. 14 men started working and 8 days they could finish certain amount of work. If it is required to finish the remaining work in 24 days. How many more men should be added to the existing workforce ?
A.	1
B.	8
C.	6
D.	4
Answer» E.

Discussion

300.	6 men can complete a piece of work in 12 days, 8 women can complete the same piece of work in 18 days and 18 children can do it in 10 days. 4 men, 12 women and 20 children do the work for 2 days. If the remaining work be completed by men only in 1 day, how many men will be required ?
A.	6
B.	4
C.	8
D.	annot be determined
Answer» B. 4

Discussion

Explore topic-wise MCQs in General Aptitude.

12 men can do a piece of work in24 days. How many days are needed to complete the work, if 8 men do this work ?

X can copy 80 pages in 20 hours, x and y together can copy 135 pages in 27 hours. Then y can copy 20 pages in ?

Two worker A and B are engaged to do a piece of work. A working alone would take 8 hours more to complete the work that when work together. If B worked alone, would take $${\text{4}}\frac{1}{2}$$hours more than when working together. The time required to finish the work together is = ?

12 monkeys can eat 12 bananas in 12 minutes. In how many minutes can 4 monkeys eat 4 bananas ?

A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternatively, with A beginning, then the work will be completed in ?

40 men can complete a piece of work in 15 days. 20 more men joined them after 5 days they start doing work. How many days will be required by them to finish the remaining work ?

A can do as much work as B and C together can do. A and B can together do a piece of work in 9 hours 36 minutes and C can do it in 48 hours. The time in hours that B needs to do the work alone, is ?

Dinesh and Rakesh are working on an Assignment, Dinesh takes 6 hours to type 32 pages on a computer, while Rakesh takes 5 hours to type 40 pages. How much time will they take working together on two different computers to type an assignment of 110 page ?

A takes 10 days less than the time taken by B to finish a piece of work. If both A and B can do it in 12 days, then the time taken by B alone to finish the work is = ?

A can do a piece of work in 5 days less than the time taken by B to do it. If both of them togethertake $${\text{11}}\frac{1}{9}$$days, then the time taken by B alone to do the same work (in days ) is ?

18 men can complete a piece of work in 63 days. 9 women take 189 days to complete the same piece of work. How many days will 4 men, 9 women and 12 children together take to complete the piece of work if 7 children alone can complete the piece of work in 486 days ?

A labourer was appointed by a contractor on the condition he would be paid Rs. 75 for each day of his work but would be, fined at the rate of Rs. 15 per day for his absent. After 20 days, the contractor paid the labourer Rs. 1140. The number of days the labourer absented from work was ?

A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be complete in ?

A can write 75 pages in 25 hours. A and B together can write 135 pages in 27 hours. In what time can B write 42 pages ?

A can do three times the work done by B in one day. They together finish $$\frac{2}{5}$$of the work in 9 days. The number of days by which B can do the work alone are ?

8 men can complete a piece of work in 20 days. 8 women can complete the same work in 32 days. In how many days will 5 men and 8 women together complete the same work ?

If 2 men or 6 women or 4 boys can finish a work in 99 days, how many days will one man, one woman and one boy together take to finish the same work ?

If 3 men or 9 boys can finish a piece of work in 21 days, in how many days can 5 men and 6 boys together do the same piece of work ?

A can do half of a piece of work in 1 day,where B can do full. B can do half the work as C in 1 day. The ratio of their efficiencies of work is = ?

If A, B and C can complete a piece of work in 6 days. If A can work twice faster than B and thrice faster then C, than the number of days C alone can complete the work is ?

A's 2 days work is equal to B's 3 days work. If A can complete the work in 8 days, then to complete the work B will take ?

A man is twice as fast as a women and a woman is twice as fast as a boy in doing a work. If all of them, a man , a woman and a boy can finish the work in 7 days, a boy will do it alone ?

Five men are working to complete a work in 15 days. After five days 10 women are accompanied by them to complete the work in next 5 days. If the work is to be done by women only, then in how many days could the work be over if 10 women have started it ?

A takes three times as long as B and C together to do a job. B takes four times as long as A and C together to do the work. If all the three, working together can complete the job in 24 days, then the number of days, A alone will take to finish the job is = ?

A can do a piece of work in 6 days. B is 25% more efficient than A. How long would B alone take to finish this work ?

A does 20% less work than B. If A can complete a piece of work in$$7\frac{1}{2}$$ hours, then B can do it in ?

P is thrice as good a workman as Q and therefore able to finish a job in 48 days less than Q. Working together, they can do it in ?

A job can be done by 3 skilled workmen in 20 days or by 5 boys in 30 days. How many days will they take if they work together ?

A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be completed in ?

The labourers A, B, C were given a contract of Rs. 750 for doing a certain piece of work. All the three together can finish the work in 8 days, A and C together can do it 12 days, while A and B together can do it in $${\text{13}}\frac{1}{3}$$days. The money will be divided in the ratio ?

The time taken by 4 men to complete a job is double the time taken by 5 children to complete the same job. Each man is twice as fast as a woman. How long will 12 men, 10 children and 8 women take to complete a job, given that a child would finish the job in 20 days ?

The daily wages of A and B respectively are Rs. 3.50 and Rs. 2.50. When A finishes a certain work, he gets a total wage of Rs. 63. When B does the same work, he gets a total wage Rs. 75. If both of them do it together what is cost of the work ?

A man can do a piece of work in 30 hours. If he works with his son then the same piece of work is finished in 20 hours. If the son works alone then he do the work in ?

A can do a certain job in 12 days and B is 60%more efficient than A. The B can do the same piece of work in ?

A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in ?

A can do a piece of work in 18 days. He worked at it for 12 days and B finished the remaining work in 8 days. B alone can do the whole work in ?

A and B can together do a piece of work it in 6 days and A alone can do it in 9 days. The number of days B will take to do it alone is ?

A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is = ?

A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If every one gets paid in proportion to work done by them, the amount C will get is ?

A can do $$\frac{1}{3}$$ rd of a work in 5 days and B can do the do $$\frac{2}{5}$$th of this work in 10 days. Both A and B, together can do the work in ?

18 men or 36 boys working 6 hours a day can plough a field in 24 days. In how many days will 24 men and 24 boys working 9 hours a day plough the same field ?

Shashi can do piece of work in 20 days. Tanya is 25% more efficient than Sashi. The number of days taken by Tanya to do the same piece of work is = ?

A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. In how many days C alone can do the same work ?

A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?

A and B work together to complete the rest of a job in 7 days. However,$$\frac{{37}}{{100}}$$of the job was already done. Also the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work ?

A can do a piece of work in 12 days and B in 20 days. If they together work on it for 5 days, and remaining work is completed by C in 3 days, then in how many days can C do the same work alone ?

16 men can finish a piece of work in 49 days. 14 men started working and 8 days they could finish certain amount of work. If it is required to finish the remaining work in 24 days. How many more men should be added to the existing workforce ?

6 men can complete a piece of work in 12 days, 8 women can complete the same piece of work in 18 days and 18 children can do it in 10 days. 4 men, 12 women and 20 children do the work for 2 days. If the remaining work be completed by men only in 1 day, how many men will be required ?