Average salary per head of all workers in a workshop is Rs.,850. If average salary per head of 7 tec

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The average salary per head of all the workers in a workshop is $Rs.\,850.$ If the average salary per head of $7$ technicians is $Rs.\, 1000$ and the average salary per head of the rest is $Rs.\, 780,$ find out the total number of workers in the workshop.

A

$26$

B

$24$

C

$28$

D

$22$

Solution

Let, the total number of workers be $x$.

$\Rightarrow 850 \times x=7 \times 1000+(x-7) \times 780 \Rightarrow x=22$

Standard 13

Quantitative Aptitude

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