If m men can do a work in r days, then the number of days taken by (m + n) men to do it is :
A. $$\frac{{{\text{m}} + {\text{n}}}}{{{\text{mn}}}}$$
B. $$\frac{{{\text{m}} + {\text{n}}}}{{{\text{mr}}}}$$
C. $$\frac{{{\text{mr}}}}{{{\text{m}} + {\text{n}}}}$$
D. $$\frac{{{\text{r}}\left( {{\text{m}} + {\text{n}}} \right)}}{{{\text{mn}}}}$$
Answer: Option C
Solution (By Examveda Team)
M1 × D1 = M2 × D2 mr = (m +n) × D2 D2 = $$\frac{{{\text{mr}}}}{{{\text{m}} + {\text{n}}}}$$This Question Belongs to Arithmetic Ability >> Time And Work
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