Question
There is a 21 litres mixture of milk and water. The
ratio of milk and water in the mixture is 4 : 3. Find the amount of water (in litres) that should be added to this mixture so that the resulting mixture has 50% of water in it.Solution
Original mixture = 21 litres, Ratio = 4:3 Milk = 12 L, Water = 9 L Let added water = x litres New water = 9 + x New total = 21 + x Set up: (9 + x)/(21 + x) = 1/2 Solve: 2(9 + x) = 21 + x → x = 3
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