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

1.	A boy 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.	1.8 kmph
B.	2 kmph
C.	2.2 kmph
D.	1.5 kmph
Answer» E.

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A boy 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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