A man rows 12 km in 5 hours against the stream and the speed of current being 4 kmph, What time will be taken by him to row 15 km with the stream?

1 hour $$27{7 over 13}$$ minutes

1 hour $$25{7 over 13}$$ minutes

1 hour $$26{7 over 13}$$ minutes

1 hour $$27{7 over 13}$$ minutes

1 hour $$24{7 over 13}$$ minutes

25 + Mcqs in Boats and Streams Problem in Maths Page 1 McqOptions

1.	A person rows a distance of $$ {3{3 over4}{ km}}$$ upstream in $$ {1{1 over 2}{ hours}}$$ and a distance of 13 km downstream in 2 hours. How much time ( in hours) will the person take to row a distance of 90 km in still water?
A.	18
B.	24
C.	20
D.	15
Answer» D. 15

Discussion

2.	A boat running upstream takes 7 hours and 40 minutes to cover a certain distance while it takes 5 hours to cover the same distance downstream. What is the ratio between the speed of the current and speed of the boat respectively?
A.	13: 4
B.	17: 4
C.	19: 4
D.	4: 19
Answer» E.

Discussion

3.	A motorboat covers a certain distance downstream in a river in 3 hours. It covers the same distance upstream in 3 and half an hour. If the speed of the water is 1.5 km / h, then the speed of the boat in still water is:
A.	19.5 km/h
B.	19 km/h
C.	17 km/h
D.	17.5 km/h
Answer» B. 19 km/h

Discussion

4.	A boat covers 24 km upstream and 36 km downstream in 6 hours, while it covers 36 km upstream and 24 km downstream in $$6{1 over 2}$$ hours. The speed of the current is:
A.	1.5 km/ hr
B.	2.5 km/ hr
C.	1 km/ hr
D.	2 km/ hr
Answer» E.

Discussion

5.	The speed of the current is 5 km / hour. A motorboat goes 10 km upstream and back again to the starting point in 50 minutes. The speed (in km / hour) of the motorboat in still water is:
A.	20
B.	26
C.	25
D.	28
Answer» D. 28

Discussion

6.	The speed of a boat in still water is 10 km/hr. It covers (upstream) a distance of 45 km in 6 hours. The speed (in km/hr) of the stream is :
A.	3.5 km/h
B.	4 km/h
C.	2.5 km/h
D.	3 km/h
Answer» D. 3 km/h

Discussion

7.	A boat moves downstream at the rate of 1 km in $$7{1 over 2}$$ minutes and upstream at the rate of 5 km an hour. What is the speed of the boat in the still water?
A.	4 km/hour
B.	3 km/hour
C.	8 km/hour
D.	$$6{1 over 2}$$ km/hour
Answer» E.

Discussion

8.	A man rows 12 km in 5 hours against the stream and the speed of current being 4 kmph, What time will be taken by him to row 15 km with the stream?
A.	1 hour $$25{7 over 13}$$ minutes
B.	1 hour $$26{7 over 13}$$ minutes
C.	1 hour $$27{7 over 13}$$ minutes
D.	1 hour $$24{7 over 13}$$ minutes
Answer» C. 1 hour $$27{7 over 13}$$ minutes

Discussion

9.	The water in a river is flowing at a rate of 4 km/hr. If the width and depth of the river are 8m and 4m respectively, then how much water will enter the sea in 15 minutes?
A.	$$28800 m^3 $$
B.	$$32000 m^3 $$
C.	$$60000 m^3 $$
D.	$$18000 m^3 $$
Answer» C. $$60000 m^3 $$

Discussion

10.	A man can row $$7{1 over 2}km/h$$ in still water. If a river running at 1.5 km an hour, it takes him 50 minutes to row to a place and back, how far off is the place?
A.	3 km
B.	4 km
C.	5 km
D.	8 km
Answer» B. 4 km

Discussion

11.	A motorboat, whose speed is 45 km./hr. in still water goes 180 km. downstream and comes back in a total of 9 hours. The speed of the stream (in km/hr.) is-
A.	12
B.	21
C.	18
D.	10
E.	15
Answer» F.

Discussion

12.	A man can row three-quarters of a kilometer against the stream in 45/4 minutes. The speed (in km/hr) of the man in still water is:
A.	2
B.	10
C.	15
D.	5
Answer» E.

Discussion

13.	A man can row upstream at 8 kmph and downstream at 13 kmph. The speed of the stream is:
A.	2.5 km/hr
B.	2.4 km/hr
C.	6 km/hr
D.	5.2 km/hr
Answer» B. 2.4 km/hr

Discussion

14.	A man can row 30 km downstream and return in a total of 8 hours. If the speed of the boat in still water is four times the speed of the current, then the speed of the current is:
A.	1 km/hr
B.	2 km/hr
C.	4 km/hr
D.	3 km/hr
Answer» C. 4 km/hr

Discussion

15.	A man swims downstream distance of 15 km in 1 hour. If the speed of the current is 5 km/ hr, the time taken by the man to swim the same distance upstream is :
A.	1 hr 30 min
B.	45 min
C.	2 hr 30 min
D.	3 hrs
Answer» E.

Discussion

16.	A boat running downstreams covers a distance of 30 kms in 2 hours. While coming back the boat takes 6 hours to cover the same distance. If the speed of the current is half that of the boat, what is the speed of that boat in kmph?
A.	15
B.	5
C.	10
D.	Cannot be determined
E.	None of these
Answer» D. Cannot be determined

Discussion

17.	The speed of the motorboat in still water is 45 kmph. If the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be:
A.	2 hrs, 40 min
B.	2 hrs, 55 min
C.	3 hrs
D.	1 hrs, 20 min
Answer» B. 2 hrs, 55 min

Discussion

18.	A man can row at a speed of $$4{1 over 2}$$km/hr in still water. If he takes 2 times as long to row a distance upstream as to row the same distance downstream, then the speed of stream (in km/hr) is :
A.	2
B.	2.5
C.	1
D.	1.5
Answer» E.

Discussion

19.	A man goes downstream with a boat to some destination and returns upstream to his original place in 5 hours. If the speed of the boat in still water and the stream are 10 km/hr and 4 km/hr respectively, the distance of the destination from the starting place is :
A.	21 km
B.	25 km
C.	16 km
D.	18 km
Answer» B. 25 km

Discussion

20.	The speed of a boat downstream is 15 km/hr. and the speed of current is 3 km/hr. Find the total time taken by the boat to cover 15 km upstream and 15 km downstream.
A.	3 hours 10 minutes
B.	2 hours 30 minutes
C.	2 hours 40 minutes
D.	2 hours 42 minutes
Answer» D. 2 hours 42 minutes

Discussion

21.	A boat goes 12 km downstream and comes back to the starting point in 3 hours. If the speed of the current is 3 km/hr, then the speed (in km/hr) of the boat in still water is :
A.	8 km/ h
B.	6 km/ h
C.	12 km/ h
D.	9 km/ h
Answer» E.

Discussion

22.	A boat rows downstream covers a distance of 20 km in 2 hrs while it covers the same distance upstream in 5 hrs. Then speed of the boat in still water is :
A.	9 km/ hr
B.	10 km/ hr
C.	7 km/ hr
D.	8 km/ hr
Answer» D. 8 km/ hr

Discussion

23.	The distance between AB is 174 km. Two Boats Start moving towards each other at the same time at points A and B respectively. One in upstream and other in downstream. If their speed in still water is 9.6 km/ hr. and 19.4 km/ hr. respectively. Then in how much time they will meet.
A.	4.5 hr.
B.	6 hr.
C.	9 hr.
D.	7 hr.
Answer» C. 9 hr.

Discussion

24.	A boat goes 75 km upstream in 3 hours and 60 km downstream in 1.5 hours. Then the speed of the boat in still water is:
A.	65 kmph
B.	60 kmph
C.	32.5 kmph
D.	30 kmph
Answer» D. 30 kmph

Discussion

25.	Speed of current is 10% of speed of boat in still water and the time taken by the boat to cover X km in downstream is 100% more than time taken by the boat to cover (X-45) km in upstream. Find the value of X?
A.	60 km
B.	87 km
C.	99 km
D.	108 km
E.	90 km
Answer» D. 108 km

Discussion

Explore topic-wise MCQs in Maths.

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