It takes four and a half hours by a jetski to 30 km downstream and comes back in still water at the rate of 15Kmph. Determine the speed of the stream.

It takes four and a half hours by a jetski to 30 km downstream and com

1.	It takes four and a half hours by a jetski to 30 km downstream and comes back in still water at the rate of 15Kmph. Determine the speed of the stream.
A.	4.5 km/hr
B.	6 km/hr
C.	7 km/hr
D.	4.48 km/hr
E.
Answer» E.

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It takes four and a half hours by a jetski to 30 km downstream and comes back in still water at the rate of 15Kmph. Determine the speed of the stream.

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