The average weight of 11 persons is increased by 4.5 kg when one of them, whose weight is 50.5 kg, is replaced by a new person. The weight of the new person is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 100 kg.
Total weight increase = 11 × 4.5 = 49.5 kg
Weight of new person = Weight of replaced person + Total weight increase
⇒ 50.5 + 49.5
⇒ 100 kg