In a boat there are 8 men whose average weight is increased by 1 kg when 1 man of 60 kg is replaced by a new man. What is weight of new comer?	Choose the correct choice from the following answers.
A) 70  B) 66  C) 68  D) 69  E) 72

Rationale: solution : member in group * age increased = difference of replacement or , 8 * 1 = new comer - man going out or , new comer = 8 + 60 ; or , new comer = 68 years . answer : option c
Answer: C