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Type: Problem Solving

Difficulty: 5 star rating

If m men can do a particular project in r days, then how many days will (m + n) men take to do the same project?

\[\frac{m+n}{mr}\]
\[\frac{m(m+n)}{r}\]
\[\frac{r(m+n)}{m}\]
\[\frac{mr}{m+n}\]
\[\frac{nr}{m+n}\]