A cricketer had a certain average of runs for his 64 innings. In his 65th innings, he is bowled out for no score on his part. This brings down his average by 2 runs. His new average of runs is :

Answer: Option B

Let the average of runs for his 64 innings = x
∴ According to the question,
$$\frac{64x+0}{65}$$   = x - 2
64x = 65x - 130
x = 130
∴ His new average is = 130 - 2 = 128