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A boat can travel 60 km in 3 hours while...

A boat can travel 60 km in 3 hours while going downstream. It can travel 90 km in 5 hours while going upstream. What is the ratio of the speed of boat in still water to the speed of the stream?

A

`10:9`

B

`4:1`

C

`6:1

D

`19:1`

Text Solution

Verified by Experts

The correct Answer is:
D
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