Quantitative Aptitude • Ratio, Average & MixtureMedium
The average weight of 7 students increases by 2 kg when one student weighing 59 kg is replaced by a new student. What is the weight of the new student?
A. 61 kg
B. 73 kg✓ Correct Answer
C. 14 kg
D. 45 kg
💡 Solution & Explanation
If the average rises by 2 kg for 7 students, the total weight rises by 7 × 2 = 14 kg. The only change is the swap, so the new student weighs 14 kg more than the one who left: 59 + 14 = 73 kg.
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