# A can contains a mixture of two liquids A and B in the ratio 7: 5 . Wh

| A can contains a mixture of two liquids A and B in the ratio 7: 5 . When 9 litres of mixture is drawn off and the can is filled with B with same amount, 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. 25

D. 21

### Right Answer is: D

#### SOLUTION

Let us suppose that the can initially contains 7x and 5x litres of mixture A and B.

∴ Quantity of A in mixture left =

∴ Quantity of B in mixture left =

∴ Quantity contained by A initially = 7x = 21litre.

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A can contains a mixture of two liquids A and B in the ratio 7: 5 . Wh