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Q: How many litres of water should be added to a 7.5 litre mixture of acid and water in the ratio of 1 : 2 such that the resultant mixture has 20% acid in it ?
  • A. 10
  • B. 2.5
  • C. 7.5
  • D. 5
Correct Answer: Option D -
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Explanations:

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