Question
A mixture (acetone and water) contains 40% acetone and
rest 96 litres water. How much acetone should be added to the mixture to make the ratio of acetone to water in the mixture 5:6?Solution
Initial quantity of acetone in the mixture = 96 × (0.4/0.6) = 64 litres
Let the quantity of acetone added be ‘x’ litres
According to the question,
(64 + x)/96 = 5/6
=> x = 80 – 64 = 16
Therefore, quantity of acetone added = 16 litres
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