Quantitative Aptitude • Ratio, Average & MixtureMedium
The average weight of 14 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?
A. 65 kg✓ Correct Answer
B. 23 kg
C. 21 kg
D. 45.5 kg
💡 Solution & Explanation
If the average rises by 1.5 kg for 14 students, the total weight rises by 14 × 1.5 = 21 kg. The only change is the swap, so the new student weighs 21 kg more than the one who left: 44 + 21 = 65 kg.
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