Aman can row 2/3rd of a kilometre downstream in 5 minutes and return to the starting point in another 10 minutes .Find the speed of the man in still water.
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Answer:
6 km/hr
Step-by-step explanation:
Distance = 2/3 km
Time in Downstream = 5min = 1/12 hr
Downstream speed = D/T = 2/3 ÷ 1/12 = 8 km/hr
Time in Return = 10 min = 1/6 hr
Speed of Return =D/T = 2/3 ÷ 1/6 = 4 km/hr
Speed of man in still water = (8 +4)/2 = 6 km/hr
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