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25 litre of solution contains alcohol and water in the ratio 2:3. How much alcohol must be added to the solution to make a solution containing 60% of alcohol ?
10.5 ltr
11.5 ltr
12.5 ltr
13.5 ltr
Initially alcohol 2/5 * 25 = 10 ltr and water is 15 ltr. To make a solution of 60% alcohol (10+x)/25+x = 60/100. X = 12.5
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