Question
A boat traveled 100 km downstream. The boat's speed in
still water is 30 km/h, and the stream's speed is 10 km/h. Calculate the time required for the boat to cover this distance.Solution
Speed downstream = 10 + 30 = 40km/hr Distance = 100 kms ATQ; Required time = 100/(10 + 30) = 2.5 hrs Hence, option a.
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