question_answer

If 28 men complete \[\frac{7}{8}\]of a piece  work in a week, then the number of men, who must be engaged to get the remaining work completed in another week, is

A)  5                    

B)  6   

C)  4                    

D)  3

Correct Answer: C

Solution :

\[\therefore \]\[\frac{7}{8}:\frac{1}{8}::28x\,\,\,\,\,\,\Rightarrow \frac{7}{8}\times x=\frac{1}{8}\times 28\] \[\therefore \]\[x=\frac{28\times 8}{7\times 8}=4\]men