1.

A Can contains a mixture of two liquids A and B in the ratio 7:5. When 9 litres of mixture are drained 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 litres
B. 20 litres
C. 21 litres
D. 25 litres
Answer» D. 25 litres


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