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- In a mixture the ratio of alcohol to water is 5 : 4.
Question 1:
In a mixture the ratio of alcohol to water is 5 : 4. If 5 litres more alcohol is added the ratio becomes 3 : 2. How many litres of alcohol was in the original mixture? A. 15 litres
B. 20 litres
C. 22.50 litres
D. 25 litres
Feedback Let the quantity of alcohol and water in the mixture be 5x and 4x respectively.
Thus, according to the problem,
10x + 10 = 12x
or, 2x = 10
or, x = 5
quantity of alcohol = 5x = 5 * 5 = 25 litres
Thus, according to the problem,
10x + 10 = 12x
or, 2x = 10
or, x = 5
quantity of alcohol = 5x = 5 * 5 = 25 litres
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