Fifteen movie theatres average 600 customers per theatre day. If six of the theatres close down but the total theatre attendance stays the same , then the average daily attendance per the remaining theatres is.

A. 900 B. 1000 C. 1100 D. 1200 Answer: Option B
Show Answer $\begin{array}{l}\text{Total No. customers}\\ \text{ = 15 × 600 = 9000}\\ \text{Now,}\\ \text{present working theateres}\\ \text{= 15 – 6 = 9}\\ \text{Required average}\\ =\Large\frac{9000}{9}\\ =1000\end{array}$


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