2016 · Q89
A cricketer has a certain average of 10 innings. In the eleventh inning he scored 108 runs, thereby increasing his average by 6 runs. What is his new average ?
Elementary MathematicsStatistics
- A42
- B47
- C48
- D60
Explanation
Let the 10-innings average be a: then (10a+108)/11 = a+6, giving a = 42. The new average after the 11th innings is 42+6 = 48 (option C).