question_answer

The average salary of male workers of a firm is Rs. 5200 while the average salary of female workers is Rs.4200. If the average salary of all the workers is Rs. 5000, then what is the percentage of female workers in the firm?

A)  80%                           

B)  20%

C)  40%                           

D)  30%

Correct Answer: B

Solution :

 By using allegation, Male : Female\[=4:1\] \[\therefore \]  % of female \[=\frac{1}{5}\times 100=\]