Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is:	Select:
A) 20	B) 21	C) 28	D) 32	E) None
Solution: Let Ajit's average be x for 9 innings. So, Ajit scored 9x run in 9 innings.   In the 10th inning, he scored 100 runs then average became (x+8). And he scored (x+8)*10 runs in 10 innings.   Now,   =&gt;9x+100 = 10*(x+8)   Or, 9x+100 = 10x+80   Or, x = 100-80   Or, x = 20   New average = (x+8) = 28 runs   Answer: Option 28
<result>C</result>
Ajit has a certain average for 9 innings. In the tenth innings, he scores 100 runs thereby increasing his average by 8 runs. His new average is: