| 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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