The average weight of 5 persons increases by 2.8 kg when a new person comes in place of one of them weighing 38 kg. The weight of the new person is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 52 kg
Calculations:
Let the average weight be x.
Let the weight of the new person be y.
According to the question;
⇒ 5(x + 2.8) - 5x = y - 38
⇒ 5x + 14 - 5x = y - 38
⇒ 14 = y - 38
⇒ y = 52 kg