A and B can do a piece of work in 12 days, B and C in 15 days; C and A in 20 days. In how many days will they finish it working together? In what time can A do it separately?

A and B can do a piece of work in 12 days, B and C in 15 days; C and A

1.	A and B can do a piece of work in 12 days, B and C in 15 days; C and A in 20 days. In how many days will they finish it working together? In what time can A do it separately?
A.	45 days
B.	20 days
C.	60 days
D.	30 days
Answer» E.

Discussion

No Comment Found

Related MCQs

Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar 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 pages?
A and B can do a job together in 7 days. A is 1 times as efficient as B. The same job can be done by A alone in :
Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman?
A can do a piece of work in 5 hours, B in 9 hours and C in 15 hours. If C could work with them for 1 hour only the time taken by A and B together to complete the work is ?
25 men reap a field in 20 days. When should 15 men leave the work, if the whole field is to be reaped in 371/2 day after they leave the work ?
12 men can complete a work within 9 days. After 3 days they started the work, 6 men joined them to replace 2 men. How many days will they take to complete the remaining work ?
14 workers can make 1400 toys in 5 days. One day after they started the work 14 more workers joined them. How many days will they take to complete the remaining work ?
Rashmi can do a piece of work in 16 days. Ravina can do the same work in 124/5 days, while Gitika can do it in 32 days. All of them started to work together but Rashmi leaves after 4 days. Ravina leaves the job 3 days before the completion of the work. How long would the work last?
A skilled, a half skilled and an unskilled labourer work for 7, 8 and 10 days respectively and they together get 369 for their work. If the ratio of their each day s work is1:1:1346then how much does the trained labourer get (in rupees) ?
60 men could complete a work in 250 days. They worked together for 200 days. After that the work had to be stopped for 10 days due to bad weather.How many more men should be engaged to complete the work in time ?

A and B can do a piece of work in 12 days, B and C in 15 days; C and A in 20 days. In how many days will they finish it working together? In what time can A do it separately?

Discussion

No Comment Found

Related MCQs

Reply to Comment