Percentage Practice Test 6 with solutions

Question : 37 of 40

Marks: +1, -0

15 litres of a mixture contains 20% alcohol and rest water. If 3 litres of water be mixed in it, the percentage of alcohol in new mixture will be:

Solution:

Let percentage of alcohol in new mixture be x%, then

20/10×15=x/100×18

∴x={20×15}/18=16 2/3%

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