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(B) Let the number of non-officer staff in the office be $x$.The total salary of all staff is the sum of the total salary of officers and non-officers

Vedclass · Accepted Answer

$510$

Vedclass · Answer

(B) Let the number of non-officer staff in the office be $x$.The total salary of all staff is the sum of the total salary of officers and non-officers.Total salary of officers $= 15 	imes 460 = 6900$.Total salary of non-officers $= x 	imes 110 = 110x$.Total salary of all staff $= (15 + x) 	imes 120$.Equating the two expressions:$6900 + 110x = 120(15 + x)$$6900 + 110x = 1800 + 120x$$120x - 110x = 6900 - 1800$$10x = 5100$$x = 510$.Therefore,the number of non-officer staff in the office is $510$.

The average salary of the entire staff in an office is $Rs. 120$ per month. The average salary of officers is $Rs. 460$ and that of non-officers is $Rs. 110$. If the number of officers is $15$,then find the number of non-officers in the office?

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