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In a mixture of milk and water, the proportion of milk by weight was 80%. If, in a 180 gm mixture, 36 gms of pure milk is added, what would be the percentage of milk in the mixture formed?

Correct answer: E. None of these

  • A. 80%
  • B. 100%
  • C. 84%
  • D. 87.5%
  • E. None of these

Explanation

In 180 g of mixture, milk is 80% × 180 g = 144 g and water is 36 g. Adding 36 g of pure milk gives 180 g milk in a total of 216 g, so the milk percentage is (180 ÷ 216) × 100 = 83.33%, which is not listed. The likely mistake is choosing 84%, an approximate value rather than the exact result.

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