Question
A boat can cover a distance of
210 km downstream with the current in 5 hours. It takes an additional 2.5 hours to return the same distance upstream. What is the speed of the boat in still water?Solution
ATQ,
Downstream speed= 210/5 = 42 km/hr Upstream speed = 210/7.5 = 28 km/hr Speed of the boat in still water=(42+28)/2 = 70/2 = 35 km/hr
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