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The average salary of employees of 2 groups a and b in an organisation is rs 4,000. The average salary of the group a employees is rs 4,800. The average salary of the group b employees is rs 3,000. If there are 10 more employees in a than b, find the number of group a employees.

A.	35	B.	40
C.	45	D.	50

Answer and Explanation

Answer:40

Explanation:
Let the number of group a employees be m. The number of group b employees be m -10
(m-10)/m = (4800-4000)/(4000-3000) = 0.8 and m = 50

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