Multiple choice

In a group of 7 people of average weight 69kg when a person of weight 69kg was replaced by another person the average weight is reduced by 2kg what is the weight of the new person?

  1. 55kg

  2. 70kg

  3. 68kg

  4. 83kg

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total weight of 7 people = 7 × 69 = 483 kg. After replacement, new total = 7 × 67 = 469 kg. Weight removed = 69 kg, so new person's weight = 469 - (483 - 69) = 55 kg.