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 : 1 ?

A barrel contains a mixture of wine and water in the ratio 3 : 1. How

1.	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 : 1 ?
A.	$\frac{1}{4}$$
B.	$\frac{1}{3}$$
C.	$\frac{2}{3}$$
D.	$\frac{1}{2}$$
Answer» C. $\frac{2}{3}$$

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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 : 1 ?

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