Multiple choice

A container has a 84 litres solution of milk and water in the ratio 7:5. If 24 litres of solution is taken out and then 5 litres of milk is added to it, what is the ratio of milk and water in the resulting mixture?

  1. $10:7$
  2. $7:4$
  3. $5:3$
  4. $8:5$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Initial: 84L in ratio 7:5 means 49L milk + 35L water. 24L removed (same ratio 7:5): removes 14L milk + 10L water. Remaining: 35L milk + 25L water. After adding 5L milk: 40L milk + 25L water = 65L total. New ratio = 40:25 = 8:5. Option A (10:7) would give 70 parts total, not matching the actual quantities.