A cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and there by decreases his average by 0.4. The number of wickets taken by him till the last match was :
Let the number of wickets taken till the last match be `x` . Then
`(12.4x + 26)/(x + 5)`= 12 `hArr` 12.4`x` + 26 = `12x` + 60 `hArr` ` 0.4x` = 34 `hArr` `x` =`134/0.4` = `340/4` = 85
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