A) 12
B) 10
C) 18
D) 16
Correct Answer: D
Solution :
[d] \[\begin{matrix} Days & No.\,\,of\,\,Labourers & Work\,\,done \\ 12 & 20 & {5}/{8}\; \\ 4 & ? & 1-\frac{5}{8}=\frac{3}{8} \\ \end{matrix}\] \[M_{1}^{{}}{{D}_{1.}}{{W}_{2}}={{M}_{2}}{{D}_{2}}{{W}_{1}}\] \[20\times 12\times \frac{3}{8}={{M}_{2}}\times 4\times \frac{5}{8}\Rightarrow {{M}_{2}}=\frac{20\times 12\times 3\times 8}{4\times 5\times 8}=36\] Hence,\[36-\,20=16\]more men needed to complete the remaining work in 4 days.
You need to login to perform this action.
You will be redirected in
3 sec
