Question

800 men can finish a given work in 6 days. How many more men are needed to finish the same work in 40 days?

Answer 1

$$\begin{gathered} \mathrm{Hi}, \\ \mathrm{using}\mathrm{the}\mathrm{man}\times \mathrm{days}=\mathrm{constant}\mathrm{method}, \\ {\mathrm{M}}_1\times {\mathrm{D}}_1={\mathrm{M}}_2\times {\mathrm{D}}_2 \\ 800\times 6={\mathrm{M}}_2\times 40 \\ {\mathrm{M}}_2=\frac{4800}{40}=120\mathrm{men} \\ \mathrm{So}120\mathrm{mens}\mathrm{are}\mathrm{required}. \\ \mathrm{Regards} \end{gathered}$$