Question 22

15 litres of a mixture contains alcohol and water in the ratio 1 : 4. If 3 litres of Water is mixed in it, the percentage of alcohol in the new mixturewill be

Solution

total quantity = 15L

alcohol : water = 1 : 4 

                       = 3 : 12 

now 3 liters of water is added, so now ratio becomes 3 : 15

% of alcohol = 3/(3+15) *100

                   = 3/18 *100

                  = $$16\frac{2}{3}$$

so the answer is option B.


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