If the speed of a swimmer in still water is 9 km/h. Find the downstream speed of the swimmer,when the river is flowing with a speed of 6 km/h?

If the speed of a swimmer in still water is 9 km/h. Find the downst

1.	If the speed of a swimmer in still water is 9 km/h. Find the downstream speed of the swimmer,when the river is flowing with a speed of 6 km/h?
A.	15 km/h
B.	18 km/h
C.	3 km/h
D.	12 km/h
Answer» B. 18 km/h

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If the speed of a swimmer in still water is 9 km/h. Find the downstream speed of the swimmer,when the river is flowing with a speed of 6 km/h?

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