Question

The speed of current is 5 km/h. What will be the respective downstream speed and upstream speed of a boy rowing a boat, if half of the distance covered going downstream in a certain time is equal to the distance covered going upstream in the same time?

A 28 km/h, 14 km/hr
B 27 km/h, 9 km/hr
C 20 km/h, 10 km/hr
D 30 km/h, 6 km/hr
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