The average score of a cricketer in 10 matches is 60 and in other 15 matches is 70. Then find the average score in all the 25 matches?	Select the correct option:  A) 50  B) 48  C) 65  D) 66  E) 72

Rationale: "average in 25 matches = ( 10 * 60 + 15 * 70 ) / 10 + 15 = 66 answer is d"
Answer: D