Question

the average of a certain number of employee in a company is 42 years after 4 years 6 employee of 60 years retires, 2 each 45 years and other 2 each 42 years leave the company after 2 years 10 employee of total age 238 joined the company such that the average now is 40 years find the essential number of employee​

Answer 1

Answer:

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