Arithmetichard · Past Paper
The ratio of milk and water in a 40L mixture is 7:1. How much water should be added so that the ratio becomes 3:1?
A6.66 L
B5 L
C4 L
D3 L
✓ Correct Answer: A — 6.66 L
Milk = 35, Water = 5. 35/(5+x) = 3/1 => 35 = 15 + 3x => 3x = 20 => x = 6.66.
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