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
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I think the answer is 2.296875
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