Multiple choice

A mixture contains milk and water in the ratio 5 : 3. If 20 litres of water is added to the mixture, the ratio of milk and water becomes 3 : 2. Find the quantity of milk in the original mixture.

  1. 320

  2. 280

  3. 300

  4. 250

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let milk = 5x, water = 3x. After adding 20L water: 5x/(3x+20) = 3/2. Cross-multiply: 10x = 9x + 60, so x = 60. Milk = 5x = 300L. Option C is correct. Option A (320) would come from incorrect algebra. Option B (280) and D (250) don't satisfy the ratio condition.

Keep practicing — related questions