Average monthly salary of all employees in an industry is Rs., 12,000 . average salary of male emplo

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The average monthly salary of all the employees in an industry is $Rs.\, 12,000$. The average salary of male employees is $Rs.\,15,000$ and that of female employees is $Rs.\, 8,000 .$ What is the ratio of male employees to female employees?

A

$5:2$

B

$3:4$

C

$4:3$

D

$2:5$

Solution

Male employees $=x$

Female employees $=y$

Now, according to the question,

$(x+y) 12000=x \times 15000+y \times 8000$

$\Rightarrow(x+y) \times 12=15 x+8 y$

$\Rightarrow 12 x+12 y=15 x+8 y$

$\Rightarrow 3 x=4 y \Rightarrow \frac{x}{y}=\frac{4}{3}$

Standard 13

Quantitative Aptitude

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