Question

In a company, the average salary of the boys is Rs. 50000. The average salary of all the employees is Rs. 48000. There are 80 boys in the company and the average salary of the girl is Rs. 40000. What is the number of girls working in the company?

A.
12
B.
15
C.
20
D.
24

Accepted Answer

C. Let $x$ be the number of girls. $48000(80 + x) = 50000(80) + 40000(x)$ $48(80 + x) = 50(80) + 40x \implies 3840 + 48x = 4000 + 40x \implies 8x = 160 \implies x = 20$.

Average Salary of Employees

Explanation

Practise this under exam conditions