The cost of a piece of jewellery is proportional to the square of its weight. A piece of jewellery weighing 10 grams is INR 3600. The cost of a piece of jewellery of the same kind weighing 4 grams is
Explanation:
Given, price ∝ (weight)2
∴ p1p2 = w12w22
⇒ 3600p2 = 10242 = 254
⇒ p2 = 3600 × 4/25 = 576
Hence, option (c).
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