The average weight of 8 persons increased by 2.5 kg when a new person comes in place of one of them weighting 45 kg. What is the weight of the new person?
Answer & explanation
Correct answer: option 3
Total weight increased when a new person is added = 8 x 2.5 = 20 kg
Weight of replaced person is 45 kg
⇒ Then weight of new person = 45 + 20 = 65 kg