Multiple choice

The average weight of three men is increased by 4 kg when one of them, whose weight is 100 kg, is replaced by another man. What is the weight of the new man?

  1. 107 kg

  2. 103 kg

  3. 104 kg

  4. 112 kg

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

Total weight increase = 3 * 4 = 12 kg. New man's weight = Old man's weight + Increase = 100 + 12 = 112 kg.

AI explanation

The total weight increase is calculated by multiplying the number of men by the average increase, so 3 multiplied by 4 kg equals a total increase of 12 kg. The formula for replacement states that the weight of the new person equals the weight of the replaced person plus the total increase in weight. Therefore, the weight of the new man is 100 kg plus 12 kg, making it 112 kg.