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Boatman goes 4km against current in 2hr and 7.5km along current in 90min. How long he take for 7 km in stationary water?

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A boatman goes 4 km against the current of the stream in 2 hour and goes 7.5 kms along the current in 90 minutes. How long will it take to go 7 km in stationary water?

posted May 25, 2017 by anonymous

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1 Answer

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2 hour 27 min
Take lcm
60 km against current = 30 hours
60 km in favour of current = 12 hours
still water 60 km = 21 hours
7 km =21*7/60 hr=2 hour 27 min

answer May 25, 2017 by Kewal Panesar



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