Question

$36$ workmen are employed to finish a certain work in $48$ days but it is found that in $24$ days , only $\frac{2}{5}$ work is done. How many more men must be taken to finish the work in time?

• A. $16$
• B. $20$
• C. $18$
• D. None of these

Answer 1

The correct option is C $18$

$\frac{2}{5}=\frac{(2\times 100)}{5}=40\%$ work completed in $24$ days
so, $60\%$ more is required to complete in $24$ days
If $36$ worker works for rest $48$ days then work will be $80\%$completed.
To complete $20$ more work within the time they need $18$ workers more.