A company produces on an average 4000 items per must for the first 3 months. How many items it must produce on an average per month over the next 9 months, to average 4375 items per month over the whole?

A. 4500

B. 4600

C. 4680

D. 4710

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Solution(By Apex Team)

$\begin{array}{l}\text{ Required average }\\ =\Large\frac{(4375\times12)-(4000\times3)}{9}\\ =\Large\frac{52500-12000}{9}\\ =\Large\frac{40500}{9}\\ =4500\end{array}$

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