Multiple choice

A bag contains 50 p, 25 p, and 20 p coins in the ratio 10 : 8 : 5, amounting to Rs. 240. Find the number of coins of each type respectively.

  1. 280, 220, 160

  2. 300, 240, 150

  3. 320, 250, 180

  4. 280, 200, 120
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Let coins be 10x, 8x, 5x. Total value: 10x(0.50) + 8x(0.25) + 5x(0.20) = 5x + 2x + x = 8x = 240. So x = 30. Therefore: 50p coins = 10 × 30 = 300; 25p coins = 8 × 30 = 240; 20p coins = 5 × 30 = 150. Check: 300(0.50) + 240(0.25) + 150(0.20) = 150 + 60 + 30 = 240.

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