Arithmetic Ability
Boats and Streams

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Q.

A boat whose speed in still water is 9 kmph, goes 12 km downstream and comes back in 3 hrs. Find the speed of the stream?

View Answer

Correct choice: B

Explanation:

Let the speed of the stream = x kmph From the given data, 129+x+129−x=3 hrs 3x2 = 27 => x = 3 kmph Therefore, the speed of the stream = 3 kmph
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