Quantitative Aptitude • Ratio, Average & MixtureMedium
The average weight of 8 students increases by 2 kg when one student weighing 62 kg is replaced by a new student. What is the weight of the new student?
A. 16 kg
B. 78 kg✓ Correct Answer
C. 64 kg
D. 46 kg
💡 Solution & Explanation
If the average rises by 2 kg for 8 students, the total weight rises by 8 × 2 = 16 kg. The only change is the swap, so the new student weighs 16 kg more than the one who left: 62 + 16 = 78 kg.
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