Consider the following:
Weight of 6 boys = Weight of 7 girls = Weight of 3 men = Weight of 4 women
If the average weight of the women is 63 kg, then what is the average weight of the boys?
Answer & explanation
Answer: (b) 42 kg
Four women weigh 4 × 63 = 252 kg, and six boys weigh the same. So the average boy weighs 252 ÷ 6 = 42 kg.
- Weight of 4 women = 4 × 63 = 252 kg.
- Weight of 6 boys = weight of 4 women = 252 kg.
- Average weight of a boy = 252 ÷ 6 = 42 kg.
- Check: 6 × 42 = 252 = 4 × 63.
Remember · In a chain of equal totals, use only the two links the question needs and ignore the rest.
Question and answer: UPSC's official GS Paper II (2024, Series A) — paper ↗ · answer key ↗. Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). ·