Sachin Tendulkar has a certain average for 11 innings. In the 12th innings he scores 120 runs and thereby increases his average by 5 runs. His new average is :

A. 60

B. 62

C. 65

D. 66

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Solution(By Apex Team)

Let the average of ’11’ innings is = x According to the question, $\begin{array}{l}\left[\Large\frac{11x+120}{12}\right]=x+5\\ 11x+120=12x+60\\ x=60\\ \text{∴ His new average}\\ \text{= 60 + 5}\\ \text{= 65}\end{array}$

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