Question

A man rows downstream 32 km and 14km upstream. If he takes 6 hours to cover each distance, then the velocity (in kmph) of the current is:

Answer 1

The velocity the current is 1.5 Km/hr

Explanation:

Down stream "d" = 32 /6 = 5.33 Km/hr

Speed = distance / time

Upstream "u" = 14/6 = 2.33 Km/hr

Speed of stream = 1/2 ( d - u)

                            = 1/2 ( 5.33 - 2.33)

                            = 1/2 x 3

                            = 1.5 Km/hr

Thus the velocity (in kmph) of the current is 1.5 Km/hr

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