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IBPS RRB Office Assistant Model Paper 13

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Question : 45

Total: 80

A container contains a mixture of two liquids A and B in the ratio of 7 : 5. When 9 litres of mixture is drawn off and the container is filled with B. The ratio of A and B becomes 7 : 9. How many litres of liquids A was contained by the container initially ?

10 litres
20 litres
21 litres
25 litres
None of these

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