Boats and Streams Problems for SSC and Bank Exams

Boats and Streams Problems for Competitive exams

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

(A) 1 kmph

(B) 5 kmph

(C) 10 kmph

(D) 15 kmph

10. The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is:

(A) 1.5km/hr

(B)  2.5 km/hr

(C) 3 km/hr

(D) 4.5 km

11. A man rows to a place 48 km distance and back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is :

(A) 1 km/hr

(B)  2.5 km/hr

(C)  3.8 km/hr

(D)  4.5 km/hr

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

(A)

(B)

(C)

(D)

13. 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) 2

(B) 4

(C) 8

(D) 9

(E) None of these

14. A man rows downstream 32 km and 14 km upstream. If he takes 6 hours to cover each distance, then the velocity (in kmph) of the current is

(A)

(B)

(C)

(D) 2

(E) None of these

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

(A) 50 minutes

(B) 1 hours30 min

(C)  1 hr 15 min

(D)  1 hr 50 min

(E) None of these

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

(A) 1 : 2

(B) 3 : 1

(C) 2 : 3

(D) 3 : 4

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