Correct Answer: 80
Explanation:
Step 1: Understand the initial setup
Step 2: Let x litres of water be added
Step 3: Set up the equation
We want milk to be 5% of the new solution:
Milk / (Milk + Water) = 5 / 100 => 8 / (80 + x) = 1 / 20
Step 4: Solve the equation
8 × 20 = 80 + x 160 = 80 + x x = 160 - 80 x = 80
Answer: 80 litres
You need to add 80 litres of water to make the solution 5% milk.
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