The ratio of the speed of a swimmer in downstream to upstream is 7 : 5. If the rate of stream of river is 1.5 km per hour then how much distance the swimmer will cover in 10 hours in still water? (assume that every time the swimmer swim with his uniform speed)

The ratio of the speed of a swimmer in downstream to upstream is 7 : 5

1.	The ratio of the speed of a swimmer in downstream to upstream is 7 : 5. If the rate of stream of river is 1.5 km per hour then how much distance the swimmer will cover in 10 hours in still water? (assume that every time the swimmer swim with his uniform speed)
A.	900 km
B.	450 km
C.	120 km
D.	90 km
E.	None of these
Answer» E. None of these

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The ratio of the speed of a swimmer in downstream to upstream is 7 : 5. If the rate of stream of river is 1.5 km per hour then how much distance the swimmer will cover in 10 hours in still water? (assume that every time the swimmer swim with his uniform speed)

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