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37.
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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?
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·
A. 30
minutes
·
B. 45
minutes
·
C. 1
hour
·
D. 1
hour 15 min
Answer:
D.
Explanation:
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Rate
downstream = [16/2] kmph = 8 kmph; Rate upstream = [16/4] kmph = 4 kmph.
·
∴ Speed in still water = 1/2(8+4)
kmph = 6 kmph.
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Title : BOATS and STREAMS Q37
Description : 37. A boatman goes 2 km against the current of the stream in 1 hour and goes 1 km along the current in 10 minutes. Ho...
Rating : 5
