A-man-can-row-6-km-h-in-still-water-When-the-river-is-running-at-1-2-km-h-it-takes-him-1-hour-to-row-to-a-place-and-back-How-far-is-the-place-

Question Number 25076 by Mr easy last updated on 03/Dec/17

A man can row 6 km / h in still water .

When the river is running at 1.2 km / h,

it takes] him 1 hour to row to a place

and back . How far is the place ?

Answered by mrW1 last updated on 03/Dec/17

\frac{x}{6 + 1.2} + \frac{x}{6 - 1.2} = 1

\Rightarrow x = \frac{1 \times 7.2 \times 4.8}{7.2 + 4.8} = 2.88 k m

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