Question
A 250 litres mixture contains only water and phenyl in the ratio 4:1, respectively. If 55 litres of this mixture is replaced with 26 litres of alcohol, then what will be the ratio of quantity of water to that of alcohol in the resultant mixture?
Solution
Initial quantity of water in the mixture = 200 × (4/5) = 200 litres After removing 55 litres of the mixture, quantity of water = (250 – 55) × (4/5) = 195 × (4/5) = 156 litres Therefore required ratio = 156:26 = 6:1
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