A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is	Choices: A) 42 runs B) 45 runs C) 48 runs D) 52 runs E) None
Sol.   Let the average for 10 innings be x. Then,   10x + 108 / 11 = x+6 ⇔ 11x + 66 = 10x + 108 ⇔ x = 42.   ∴ New average = (x+6) = 48 runs.   Answer 48 runs
<result>C</result>
A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is