The average runs of a cricket player of 12 innings was 48. How many runs must he make in his next innings so as to increase his average of runs by 10? Choose one
A) 12	B) 142	C) 164	D) 178	E) 84

Rationale: "explanation : average after 13 innings = 58 required number of runs = ( 58 * 13 ) – ( 48 * 12 ) = 754 – 576 = 178 answer d"
Answer: D