Boats and Streams Problems for SSC and Bank Exams
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
Correct Answer : A
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
Correct Answer : D
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
Correct Answer : B
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
Correct Answer : C
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
Correct Answer : C
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Vikram Singh
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