A mixture of 15 litres consists of 20% alcohol and rest is water. If 3 more litres of water are added to the mixture, what will be the percentage of alcohol in new mixture?

Options
- 15%
- 15.75%
- 16.66%
- 17%

CORRECT ANSWER : 16.66%

Discussion Board
civil

80% of 15 ltrs= 12ltrs
after addition of extra three ltrs total quantity becomes 18ltrs and new percentage of water becomes (12+3/18) = 0.8333 ie 83.333%
so new percentage of alcohol is 100-83.33=16.667

chandanii 09-2-2017 11:17 AM

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