Mr. Star was a consistent batsman throughout his career. He played...

It is given that had he scored 10 runs in the last innings, his average would have been 50 . ($$\begin{aligned} & \Rightarrow \frac{\text { Total runs scored }+10}{80}=50 \\ & \Rightarrow R+10=80 \times 50 \\ & \Rightarrow R+10=4000 \\ & \Rightarrow R=4000-10=3990 \end{aligned}$$) When he scored 2 runs in the last innings, the total runs scored in the first 79 innings was: (\Rightarrow R_{79 \text { innings }}=3990-2=3988) Average after 79 innings: (\Rightarrow\text { Average }=\frac{\text { Total runs scored }}{\text { Total innings played }}=\frac{3988}{79}$) On dividing: (\Rightarrow$\text { Average }}=49+\frac{74}{79}) (\therefore) The average at the end of the 79th innings is: (49 $\frac{74}{79}$)