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A cricketer, whose bowling average was 12.4 runs/wicket takes 5 wickets for 22 runs in a match, thereby decreases his average by 0.4. The number of wickets, taken by him before this match was :
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- 78
- 87
- 95
- 105
- 78
Correct Option: C
Let the number of wickets before the last match be y.
According to the question,
⇒ 12.4y + 22 = (y + 5 ) × 12
⇒ 12.4y + 22 = 12y + 60
⇒ 12.4y – 12y = 60 – 22
⇒ 0.4y = 38
⇒ y = 38 ÷ 0.4
| ⇒ y = | = 95 | |
| 4 |
