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A motorboat went downstream for 28 km an...

A motorboat went downstream for 28 km and immediately returned. It took the boat twice time to make returned trip than to go. If the speed of the river flow were twice as high, the trip downstream and back would take 672 minutes. Find the speed of the boat in still water and the speed of the river flow.

A

9 km/hr,3 km/hr

B

9 km/hr,6 km/hr

C

8 km/hr,2 km/hr

D

12 km/hr,3 km/hr

Text Solution

Verified by Experts

The correct Answer is:
A
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