A cricket batsman had a certain average of runs for his

Home » Aptitude » Average » Question

A cricket batsman had a certain average of runs for his 11 innings. In the 12th innings, he made a score of 90 runs and thereby his average of runs was decreased by 5. His average of runs after 12th innings is :

1. 155
2. 150
3. 145
4. 140

Correct Option: C

Let the batsman’s average in 11 innings be n runs.
According to question,

∴	11n + 90	= n - 5
	12

⇒ 11n + 90 = 12n – 60
⇒ n = 150
∴ Required average = 150 – 5 = 145