The mean of 50 observations was 40. It was found later that an observation 45 was wrongly taken as15 The corrected new mean is	Choose the correct choice from the following answers: A) 40 B) 36.5 C) 46.5 D) 20.5 E) 40.6

Rationale: "explanation : correct sum = ( 40 * 50 + 45 - 15 ) = 2030 correct mean = = 2030 / 50 = 40.6 answer : e"
Answer: E