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    Question

    A swimmer swims from a point A against a current for 5

    minutes and then swims current for next 5 minutes and comes to the point B. If AB is 100meters, the speed of the current is (km/h).
    A 12km/h Correct Answer Incorrect Answer
    B 5km/h Correct Answer Incorrect Answer
    C 0.2km/h Correct Answer Incorrect Answer
    D 0.6km/h Correct Answer Incorrect Answer

    Solution

    . Let the speed of boat in still water =B and speed of stream =S Distance covered by downstream speed in 5 minutes =(B+S) ×5/60 Distance covered by downstream speed in 5 minutes=(B-S) ×5/60 ATQ- S=6/10 =0.6km/h Speed of current =S= 0.6km/h

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