A bucket contains a mixture of two liquids A and B in the proportion 7:5. If 9 litres of mixture is replaced by 9 liters of liquid B,then the ratio of the two liquids becomes 7:9 .How much of the liquid A was there in the bucket ?

A bucket contains a mixture of two liquids A and B in the proportion 7

1.	A bucket contains a mixture of two liquids A and B in the proportion 7:5. If 9 litres of mixture is replaced by 9 liters of liquid B,then the ratio of the two liquids becomes 7:9 .How much of the liquid A was there in the bucket ?
A.	21 liters
B.	23 liters
C.	25 liters
D.	27 liters
Answer» B. 23 liters