A boat covers a certain distance downstream in 15 seconds and the same distance…

MATHEMATICS · Subjective · CBSE · Mathematics · Proportional Reasoning-2 · Proportional Reasoning-2

Problem

A boat covers a certain distance downstream in 15 seconds and the same distance upstream in 30 seconds. How much time will it take to cover the same distance in still water? Assume that the duty of the engine is constant.

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