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The average of 50 numbers is 38. If two numbers, namely 45 and 55 are discarded, the average of the remaining numbers is ?

A. 37.5 B. 37.9 C. 36.5 D. 37.0 Answer: Option A
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Solution(By Apex Team)

According to the question, Average of 50 numbers is = 38 Sum of 50 numbers is = 38 × 50 = 1900 Two numbers discarded = 45 + 55 = 100 Sum of 48 numbers = 1900 – 100 = 1800 $\begin{array}{l}\text{∴ Average }\\ =\Large\frac{1800}{48}\\ =37.5\end{array}$

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