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A purse holds ₹300 made up of ₹1, ₹2 and ₹5 coins. There are three times as many ₹1 coins as ₹5 coins, and just as many ₹2 coins as ₹5 coins. How many ₹5 coins are in the purse?

Competition practiceAlgebra
  • A30
  • B50
  • C20
  • D60

Step-by-Step Solution

Let there be coins of ₹5. Then there are coins of ₹1 and coins of ₹2. The total value is , so . (30 × ₹5 = ₹150, 90 × ₹1 = ₹90 and 30 × ₹2 = ₹60, which add to ₹300.)
Answer: A) 30

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