Boats and Streams Problems for SSC and Bank Exams

Boats and Streams Problems for Competitive exams

17. If a boat goes 7 km upstream 42 minutes and the speed of the stream is 3 kmph then the speed of the boat in still water is:

(A) 2.4 km/hr

(B) 8 km/hr

(C) 13 km/hr

(D) 12 km/hr

18. If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph, then the man’s rate along the current is :

(A) 5.35 kmph

(B) 7.2 kmph

(C) 6.5 kmph

(D) 8.5 kmph

(E) None of these

19. The speed of a boat in standing water is 9 kmph and the speed of the stream is 1.5 kmph. A man rows to a place at a distance of 105 km and comes back to the starting point. The total time taken by him is

(A) 17 hours

(B) 19 hours

(C) 21 hours

(D) 24 hours

20. A man can row at 5 kmph in still water. If the velocity of the stream is 1 kmph and it takes him 1 hours to row to a place and come back, how far is the place?

(A) 2.4 km

(B) 2.6 km

(C) 2.8 km

(D) 3 km

21. A man can row  kmph in still water and finds that it takes him thrice as much time to row up than as to row down the same distance in the river. The speed of the current is:

(A) km/hr

(B) km/hr

(C) km/hr

(D) km/hr

22. A motorboat whose speed is 15km/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) 1

(B) 5

(C) 15

(D) 10

23. A boat takes 90 min less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is :

(A) 2 mph

(B) 4 mph

(C) 6 mph

(D) 8 mph

24. A boat covers 24 km upstream and 36 km downstream in 6 hours while it covers 36 km upstream and 24 km downstream in  hours. The velocity of the current is: 

(A) 0.5 km/hr

(B) 1.5 km/hr

(C) 2 km/hr

(D) 3.5 km/hr

25. A man can row  kmph in still water. If in a river running at 1.5 km an hours, it takes him 50 minutes to row to a place and back, how far off is the place?

(A) 3

(B) 6

(C) 2

(D) 4

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