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CAT 2024 Set-2 | Quantitative Aptitude | Question: 7

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A vessel contained a certain amount of a solution of acid and water. When $2$ litres of water was added to it, the new solution had $50 \%$ acid concentration. When $15$ litres of acid was further added to this new solution, the final solution had $80 \%$ acid concentration. The ratio of water and acid in the original solution was

  1. $4:5$
  2. $5: 3$
  3. $5: 4$
  4. $3: 5$

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