Correct Answer: 80 lit
Explanation:
After removing 40 liters of mixture:
Remaining:
Then, 40 liters of milk is added:
New water : milk = 1 : 4
So we form the equation:
(0.4x – 16) / (0.6x + 16) = 1 / 4
Cross-multiplying:
4(0.4x – 16) = 0.6x + 16 1.6x – 64 = 0.6x + 16 1.6x – 0.6x = 16 + 64 1x = 80
Answer: 80 liters
The initial quantity of the mixture was 80 liters.
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