A batsman scores 80 runs in his sixth innings and thus increases his average by 5. What is his average after six innings? |
A) 50
B) 55
C) 60
D) 65
Correct Answer: B
Solution :
Let the average of 5 innings be x, |
Score in sixth innings = 80 |
\[\therefore \] Total of 5 innings = 5x |
According to the question, |
\[\frac{5x+80}{6}=x+5\] |
\[\Rightarrow \] \[5x+80=6x+30\] |
\[\Rightarrow \] \[x=80-30=50\] |
\[\therefore \] His average after sixth innings \[=50+5=55\] |
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