A child swims in still water at 4.5 km/hr. The river is flowing at a rate of 1.5 km/hr. Find the average speed of the child if he swims same distance upstream and downstream.

A child swims in still water at 4.5 km/hr. The river is flowing at a r

1.	A child swims in still water at 4.5 km/hr. The river is flowing at a rate of 1.5 km/hr. Find the average speed of the child if he swims same distance upstream and downstream.
A.	3 km/hr
B.	3.5 km/hr
C.	4 km/hr
D.	6 km/hr
Answer» D. 6 km/hr

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A child swims in still water at 4.5 km/hr. The river is flowing at a rate of 1.5 km/hr. Find the average speed of the child if he swims same distance upstream and downstream.

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