Paper 1 · Mathematical Reasoning and Aptitude
UGC NET December 2021 June 2022 (11.10.2022) Shift-II
The average weight of 15 men decreases by 2 kg when one of them, whose weight is 70 kg, is replaced by a new man. What is the weight of the new man?
A35
B45
C38
D40 ✓ Correct
Correct answer: (D) 40 — The answer is 40 kg.
Explanation
★The answer is 40 kg.
★The average of 15 men falls by 2 kg, so the total weight falls by 15 times 2, which is 30 kg.
★This drop happens because the 70 kg man is replaced.
★So the new man weighs 70 minus 30.
★That is 40 kg.
★The other options do not fit this change.
★So the answer is 40 kg.
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