Multiple choice

A bag contains Rs. 187 in the farm of 1 rupee, 50 paise and 10 paise coins in the ratio 3:4:5. Find the number of 50 paise coins?

  1. 146

  2. 138

  3. 136

  4. 142

  5. None of these

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let coins be 3x, 4x, 5x in ratio 3:4:5. Value = 3x(1) + 4x(0.5) + 5x(0.1) = 3x + 2x + 0.5x = 5.5x = 187. So x = 34. Number of 50 paise coins = 4x = 136. Verify: 102 × 1 + 136 × 0.5 + 170 × 0.1 = 102 + 68 + 17 = 187.