# Boats and Streams Problems

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These Boat and Stream Question papers are collected from SSC, Railway and other competitive exam’s previous year questions. These Boats and Streams Difficult Problems will help you for your exam preparation.

## Model Questions and Answers on Boats and Streams Problems

1. A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 miles/hour, the speed of the stream is

A. 2m/hr

B. 2.5 m/hr

C. 3m/hr

D. 4m/hr

2. A motor boat, whose speed is 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is

A. 4

B. 5

C. 6

D. 10

3. A man can row at 5 km/hr in still water. If the velocity of current is 1 km/hr and it takes him 1 hour to row to a place and come back, how far is the place?

A. 2.4km

B. 2.5 km

C. 3km

D. 3.6km

4. A boat covers a certain distance downstream in 1 hour, while it comes back in 15 hours. If the speed of the stream be 3 km/hr, what is the speed of the boat in still water?

A. 12 km/hr

B. 18 km/hr

C. 14 km/hr

D. 15 km/hr

E. None of these

5. A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the current respectively?

A. 2:1

B. 3:2

C. 8:3

D. Cannot be determined

E. None of these

6. A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.

A. 2 hours

B. 3 hours

C. 4 hours

D. 5 hours

7. A man can row three-quarter of a kilometre against the stream in uz minutes. The speed (in km/hr) of the man in still water is

A. 2

B. 3

C. 4

D. 5

8. A man’s speed with the current is 15 km/hr, and the speed of the current is 2.5 km/hr. The man’s speed against the current is

A. 8.5 km/hr

B. 9 km/hr

C. 10 km/hr

D. 12.5 km/hr

9. A boat running downstream covers a distance of 16 km in 2 hours, while for covering the same distance upstream, it takes 4 hours. What is the speed of the boat in still water?

A. 4 km/hr

B. 6 km/hr

C. 8 km/hr

D. Data inadequate

10. In one hour, a boat goes 11 km along the stream and 5 km against the stream. The speed of the boat in still water (in km/hr) is:

A. 3

B. 5

C. 8

D. 9

11. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is

A. 2:1

B. 3:1

C. 3:2

D. 4:3

12. A boatman goes 2 km against the stream in 1 hour and goes 1 km along the current in 10 minutes. How long will he take to go 5 km in stationary water?

A. 40 minutes

B. 1 hour

C. 1 hour 15 minutes

D. 1 hour 30 minutes

13. Rahul can travel 12 miles downstream in a certain river in 6 hours less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for his 24-mile round trip, the downstream 12 miles would take only one hour less than the upstream 12 miles. What is the speed of the current in miles/hour?

A. 1.3

B. 1.6

C. 2.3

D. 2.6

14. A man can row at 7 ; km/hr in still water. If in a river running at 1.5 km/hr, it takes him 50 minutes to row to a place and back, how far off is the place?

A. 2km

B. 3km

C. 4km

D. 5km

15. There is a road beside a river. Two friends started from a place A, moved to a temple situated at another place B and then returned to A again. One of them moves on a cycle at a speed of 12 km/hr, while the other sails on a boat at a speed of 10 km/hr. If the river flows at the speed of 4 km/hr, which of the two friends will return to place A first?

A. Cyclist

B. Sailor

C. both cyclist and sailor

D. data inadequate

16. The speed of a boat in still water is 6 km/hr and the speed of the stream is 1.5 km/hr. A man rows to a place 22.5 km away and come back to the starting point. The total time taken by him is

A. 4 hours 10min

B. 8 hours

C. 10 hours

D. 6 hours 10 minutes

17. A man rows down a river 15 km in 3 hrs. with the stream and returns in 7.5> hrs. The rate at which he rows in still water is

A. 2.5 km/hr

B. 1.5 km/hr

C. 3.5 km/hr

D. 4.5 km/hr

18. A man can swim 3 km/hr in still water. If the velocity of the stream is 2 km/hr, the time taken by him to swim to a place 10 km upstream and back is :

A. 8.3 hr.

B. 9.3 hr.

C. 10 hr.

D. 12 hr.

19. A sailor goes 12 km downstream in 48 minutes and returns in 1 hour and 20 minutes. The speed of the sailor in still water is :

A. 12 km/hr

B. 12.5 km/hr

C. 13 km/hr

D. 15 km/hr

20. A man rows a boat 18 kilometres in 4 hours downstream and returns upstream in 12 hours. The speed of the stream (in km per hour) is :

A. 1 km/h

B. 1.5 km/h

C. 2 km/h

D. 1.75 km/h

21. A boat goes 8 km in one hour along the stream and 2 km in one hour against the stream. The speed (in km/hr) of the stream 1s :

A. 2

B. 3

C. 4

D. 5

22. A swimmer swims from a point A against a current for 5 minutes and then swims backwards in favour of the current for the next 5 minutes and comes to the point B. If AB = 100 metres, the speed of the current (in km per hour) is :

A. 0.6

B. 0.4

C. 0.2

D. 1

23. Two boats A and B start towards each other from two places, 108 km apart. Speeds of the boats A and B in still water are 12 km/hr and 15 km/hr respectively. If A proceeds down and B up the stream, they will meet after :

A. 4.5 hours

B. 4 hours

C. 5.4 hours

D. 6 hours

24. 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. 16km

B. 18 km

C. 21 km

D. 25 km

25. Speed of a boat is 5 km/hr in still water and the speed of the stream is 3 km/hr. If the boat takes 3 hours to go to a place and come back, the distance of the place is

A. 3.75 km

B. 4km

C. 4.8 km

D. 4.25 km

26. A boat goes 24 km upstream and 28 km downstream in 6 hours. It goes 30 km upstream and 21 km downstream in 6 hours and 30 minutes. Find the speed of the boat in still water.

A. 8 km/hr

B. 9 km/hr

C. 10 km/hr

D. 12 km/hr

27. A boat goes 30 km upstream and 44 km downstream in 10 hrs. In 13 hrs, it can go 40 km upstream and 55 km downstream, then the speed of the boat in still water is

A. 5 km/hr

B. 8 km/hr

C. 15 km/hr

D. 13 km/hr