A mixture contains alcohol and water in the ratio 4 3 If 5 liters of water is added to the mixture t...........

Quantitative Aptitude (CDS) Ratio, Proportion

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.

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Explanation:

Let the quantity of alcohol and water be 4x litres and 3x litres respectively.
4x/(3x+5)=?
20x=4(3x+5)
8x=20
x=2.5
Quantity of alcohol=(4×2.5)
=10 litres.