Question

A cap contains a mizture 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. Litres of liquid A
contained by the can initially was
(1) 10
(2) 20
(3) 21
(4) 25​

Answer 1

Answer:

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