Question
175 litres of mixture X contains acetone and glycerine
in the ratio 11:14, respectively. 75 litres of the mixture is withdrawn and labelled as mixture Y and 8 litres of acetone is added to it. Find the ratio of glycerine to acetone in mixture Y. STSolution
Quantity of acetone in mixture Y = 75 × 11/25 = 33 litres Quantity of glycerine in mixture Y = 75 – 33 = 42 litres After addition of 8 litres of acetone, New ratio of glycerine to acetone = 42:(33 + 8) = 42:41
42, 54, 78, 114, 168, 222
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