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Source: OG11th

Level: 3

If 75 percent of a class answered the first question on a certain test correctly, 55 percent answered the second question on the test correctly, and 20 percent answered neither of the questions correctly, what percent answered both correctly?

  • A 0.1
  • B 0.2
  • C 0.3
  • D 0.5
  • E 0.65

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