Quantitative Aptitude • Ratio, Average & MixtureMedium
The average weight of 14 students increases by 2 kg when one student weighing 61 kg is replaced by a new student. What is the weight of the new student?
A. 89 kg✓ Correct Answer
B. 63 kg
C. 33 kg
D. 28 kg
💡 Solution & Explanation
If the average rises by 2 kg for 14 students, the total weight rises by 14 × 2 = 28 kg. The only change is the swap, so the new student weighs 28 kg more than the one who left: 61 + 28 = 89 kg.
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