Maths A batsman has a certain average of runs in 11 innings. He scored 129 runs in the 12th innings, after that his average of runs increased by 9 runs. What is the average of his 11 innings?
| Q.200568: A batsman has a certain average of runs in 11 innings. He scored 129 runs in the 12th innings, after that his average of runs increased by 9 runs. What is the average of his 11 innings? |
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