The average weight of 16 students increases by 1.5 kg when one student weighing 44 kg is replaced by a new student. What is the weight of the new student?

💡 Solution & Explanation

If the average rises by 1.5 kg for 16 students, the total weight rises by 16 × 1.5 = 24 kg. The only change is the swap, so the new student weighs 24 kg more than the one who left: 44 + 24 = 68 kg.