Question
A bag contains coins of ₹1, ₹2, and ₹5 denominations in the ratio 3:2:1. If the total amount in the bag is ₹240, find the number of ₹2 coins.
Solution
Let the number of ₹1, ₹2, and ₹5 coins be 3x, 2x, and x respectively. Total amount = 3x × 1 + 2x × 2 + x × 5 = 3x + 4x + 5x = 12x. 12x = 240; x = 20. Number of ₹2 coins = 2x = 2 × 20 = 40. Answer: b) 40
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