A boat can row downstream at 24 km and upstream 16 km in 8 hours. Then what is the velocity of the current ?
The rate of downstream = 24 / 8 km/hr , The rate of upstream = 16 / 8 km /hr . So , the velocity of the current is 1 / 2 ( 24 / 8 – 16 / 8 ) km /hr = 1 / 2 km /hr.
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