Multiple choice

In a group of 8 persons, the average weight increases by 3 kg if a new person replaces a member weighing 70 kg. What is the weight of the new member?

  1. 96 kg

  2. 94 kg

  3. 91 kg

  4. 89 kg

  5. 84 kg
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Total weight increase = 8 * 3 = 24 kg. New person weight = Old person weight + Total increase = 70 + 24 = 94 kg.

AI explanation

If the average weight of 8 people increases by 3 kg, the total weight of the group increases by 8 * 3 = 24 kg. The new member must weigh 24 kg more than the 70 kg person being replaced. Therefore, the weight of the new member is 70 + 24 = 94 kg.

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