The average weight of 8 people increases by 2.5 kg when a new person comes in place of one of them weighing 55 kg. What is the weight of the new person?
Select: A) 75 kg B) 85 kg C) 95 kg D) 65 kg E) 55 kg

Rationale: "the total weight increase = ( 8 x 2.5 ) kg = 20 kg weight of new person = ( 55 + 20 ) kg = 75 kg the answer is a ."
Answer: A