GRE Problem Solving Question 707

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Source: Magoosh

Solution X is 10 percent alcohol by volume, and solution Y is 30 percent alcohol by volume. How many milliliters of solution Y must be added to 200 milliliters of solution X to create a solution that is 25 percent alcohol by volume?

  • A
  • B
  • C 400
  • D 480
  • E 600

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