A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?

A man can swim in still water at 4.5 km/h, but takes twice as long to

1.	A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?
A.	3
B.	7.5
C.	2.25
D.	1.5
Answer» E.

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A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?

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