Manish can row at a speed of 4.5 km/hr in still water and rows to a certain upstream point and back to the starting point in a river which flows at 1.5 km/hr. Find his average speed for total journey. - Study24x7
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Manish can row at a speed of 4.5 km/hr in still water and rows to a certain upstream point and back to the starting point in a river which flows at 1.5 km/hr. Find his average speed for total journey.

A

3 km/hr

B

2 km/hr

C

5 km/hr

D

4 km/hr

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