| A batsman has a certain average of runs for 14th innings. He scores 72 runs in the 15 innings thus his average increased by 2. Find the average after 15th innings. |
A) 44
B) 46
C) 42
D) 48
Correct Answer: A
Solution :
| Let the average of 14 innings \[=x\] |
| Average of 15 innings \[=x+2\] |
| Then, \[14x+72=15\,\,(x+2)\] |
| \[\Rightarrow \] \[14x+72=15x+30\]\[\Rightarrow \]\[x=42\] |
| Average of 15 innings \[=x+2=42+2=44\] |
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