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.Management Sciences
Category: Boats and Streams
A man swims downstream 72 km and upstream 45 km taking 9 hours each time; what is the speed of the current?
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A. 3 kmph
B. 1.5 kmph
C. 13 kmph
D. 6.5 kmph
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A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?
A. 5 kmph
B. 10 kmph
C. 30 kmph
D. 15 kmph
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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. 40 minutes
B. 1 hour
C. 1 hr 15 min
D. 1 hr 30 min
A man swims downstream 30 km and upstream 18 km taking 3 hours each time, what is the speed of the man in still water?
A. 2 kmph
B. 8 kmph
C. 16 kmph
D. 4 kmph
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The speed of a motor boat is that of the current of water as 36:5. The boat goes along with the current in 5 hours 10 min, it will come back in_______?
A. 5 hours 50 min
B. 6 hours
C. 6 hours 50 min
D. 12 hours 10 min
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A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is________?
A. 10 kmph
B. 5 kmph
C. 20 kmph
D. 22 kmph
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