The average weight of 8 persons is increased by 2.5 kg when one of them who weighs 56 kg is replaced by a new man. The weight of the new man is:

by

A. 70 years
B. 75 years
C. 76 years 
D. 80 years

🧠 Explanation (Math):

Given: 8 persons’ average rises by 2.5 kg when 56 kg is replaced
Step 1: Increase in total = 8 × 2.5 = 20 kg
Step 2: New man’s weight = 56 + 20 = 76
Final Answer: 76