Multiple choice

If in a class a 48 kg weight student is replaced by a new student the average weight of 20 students is increased by 0.6 kg. Find the weight of new student.

  1. 45 kg.

  2. 55 kg.

  3. 60 kg.

  4. 70 kg.

  5. None of these

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

Average increases by 0.6 kg for 20 students. Total increase = 20 × 0.6 = 12 kg. This means the new student weighs 12 kg more than the student they replaced (48 kg). Weight of new student = 48 + 12 = 60 kg.