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A can contains a mixture of two liquids A ...

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A can contains a mixture 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. How many litres of liquid A were contained by the can initially?

  1. 10
  2. 20
  3. 21
  4. 25
Asked By : YamunaCategory : Alligation or Mixture
Answer
c. 21
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