Multiple choice

If in a class a 30 kg's student is replaced by a new student, the average weight of 20 students increased by 0.75 kg. Find the weight of the new student?

  1. 35 kg

  2. 40 kg

  3. 45 kg

  4. 50 kg

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

Total increase in weight = 20 students × 0.75 kg = 15 kg. The new student must weigh 15 kg more than the student they replaced (30 kg). Therefore, new student's weight = 30 + 15 = 45 kg.