The average salary per head of all the workers in a workshop is Rs 850 If the average salary p...........

Quantitative Aptitude ( CCS) Average

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 the total number of workers in the workshop.

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Explanation:

Let the total number of workers be y.
So sum of salary for all workers = sum of salary of 7 technician + sum of salary for other y -7 workers.
7 x 1000 + 780(y -7) = 850 y
⇒ 7000 + 780y - 5460 = 850y
⇒ 70y = 1540
∴ y = 22

So total number of workers = 22