Average of 10 matches is 34, How many runs one should should score to increase his average by 4 runs.	Choose one:
A) 70 B) 76 C) 78 D) 80 E) 88

Rationale: explanation : average after 11 innings should be 38 so , required score = ( 11 * 38 ) - ( 10 * 34 ) = 418 - 340 = 78 answer : option c
Answer: C