6. A mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4 : 5. The quantity of alcohol in the given mixture is
(1) 3 litres (2) 4 litres
(3) 15 litres (4) 10 litres
(SSC CHSL DEO & LDC Exam. 27.10.2013 IInd Sitting)
MATHEMAGIC
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BY AJAY GULATI