Quantitative Aptitude
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Mixtures & Alligation
Question
5 out of 25
A Can contains a mixture of two liquids A and B is the ratio 7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?
A  10 
B  20 
C  21 
D  25 
E  None of These

Ans. C Suppose A can contains 7x and 5x litre Mixture A and B respectively.
Quantity of A in mixture left
Quantity of B in mixture left =
252x – 189 = 140x + 147
112x = 336 = x =3
So quantity = 21 litre
Mixtures & Alligation Flashcard List
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