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Two boats `A` and `B` moved away from a boy anchored in the middle of a river. `A` moved along the river and `B` at right angle to it. Having moves off equal distances from the boy, the boats returned. Find the ratio of the times of motion of the boats, if the velocity of each boat with respect to still water is `eta` times greater than the velocity of water current.

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The correct Answer is:
`(n)/(sqrt(n^(2)-1))`
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NN GHOSH-COMPOSITION AND RESOLUTION OF VELOCITIES-Exercise
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