20 litres of a mixture contains 20 alcohol and the rest water If 4 litres of water be mixed in it th...........

Quant (SSC) Percentage

20 litres of a mixture contains 20% alcohol and the rest water. If 4 litres of water be mixed in it, the percentage of alcohol in the new mixture will be

12 1/2%

33 1/3%

16 2/3%

25%

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Explanation:

Quantity of alcohol = 20 /100 x 20 = 4 ltrs.
Quantity of water = 20 – 4 = 16 litres
Now, 4 litres of water be mixed in it,
then new mixture = 20 + 4 = 24 litres
∴ Percentage of alcohol = 4 /24 x 100 = 50/3
16 2/3%