Question

A boy can swim in water with a speed of 14 km/hr in still water. If the speed of the stream is 4 km/hr, what will be the time taken by the boy to cover 54 km downstream?

A 2 hrs Correct Answer Incorrect Answer
B 3 hrs Correct Answer Incorrect Answer
C 5 hrs Correct Answer Incorrect Answer
D 6 hrs Correct Answer Incorrect Answer

Solution

Downstream Speed = (14 + 4) km/hr = 18 km/hr Time taken = 54/18 = 3 hours

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