A can is full of mixture of two liquids A and B in the ratio of 7:5

A can is full of mixture of two liquids A and B in the ratio of 7:5. Whn 9 litres of mixture are drawn off from the can and replaced by the same quantitiy of liquid B, The ratio of A and B in the can becomes 7:9. The capacity of the can is
(a) 10 litres
(b) 21 litres
(c) 20 litres
(d) 36 litres

Anurag Mishra Professor Asked on 21st March 2016 in Maths.
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    Answer: (d) 36 litres 

    Anurag Mishra Professor Answered on 9th May 2016.
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