304Q:
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person ?
A) 70 kg B) 75 kg
C) 80 kg D) 85 kg
The average weight of 8 persons
Answer: D) 85 kg
Explanation:
Total weight increased = (8 x 2.5) kg = 20 kg.
Weight of new person = (65 + 20) kg = 85 kg.
Subject: Average – Quantitative Aptitude – Arithmetic Ability