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Q.
A mixture contains alcohol and water in the ratio 4 : 3. If 5 liters of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture.
A.
10
B.
12
C.
15
D.
18
View Answer
Correct choice: A
Explanation:
Let the quantity of alcohol and water be 4x litres and 3x litres respectively 4x/(3x+5) = 4/5 20x = 4(3x+5) 8x = 20 x = 2.5 Quantity of alcohol = (4 x 2.5) litres = 10 litres.
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