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A barrel contains a mixture of wine and water in the ratio 3 : 1. How much fraction of the mixture must be drawn off and substituted by water so that the ratio of wine and water in the resultant mixture In the barrel becomes 1:11). $\frac{1}{4}$2). $\frac{1}{3}$3). $\frac{3}{4}$4). $\frac{2}{3}$ |
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