Multiple choice

Find the new average weight of the class (in kg) if a student weighing 108 kg enters a class initially having 23 students having an average weight of 60 kg.

  1. 62

  2. 64

  3. 72

  4. 82
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total weight initially = 23 * 60 = 1380. New total weight = 1380 + 108 = 1488. New average = 1488 / 24 = 62.

AI explanation

Calculate the total initial weight of the class by multiplying the number of students by their average weight: 23 students * 60 kg = 1380 kg. Add the new student's weight of 108 kg to make the new total weight 1488 kg. Divide this by the new total of 24 students to find the new average: 1480 / 24 = 62 kg.

Keep practicing — related questions