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The average salary of male employees in a firm was Rs. 5200 and that of females was Rs. 4200. The mean salary of all the employees was Rs. 5000. What is the percentage of female employees?
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- 80%
- 20%
- 40%
- 30%
Correct Option: B
Let the number of male employees in the firm be p and that of female employees be q.
According to the question,
| = 5000 | p + q |
⇒ 52p + 42q = 50 (p + q)
⇒ 52p + 42q = 50p + 50q
⇒ 52p – 50p = 50q – 42q
⇒ 2p = 8q
⇒ p = 4q
∴ p + q = 4q + q = 5q
| ∴ Required percent = | × 100 = 20% | 5y |
