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A can contains a mixture of two liquids A and B in 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. | 45 litres [Wrong Answer] |
B. | 36 litres [Wrong Answer] |
C. | 21 litres [Correct Answer] |
D. | 28 litres [Wrong Answer] |