GMAT 考满分题库

Magoosh - 数学PS - 299
The ratio of two positive numbers is 3 to 4. If k is added to each number the new ratio will be 4 to 5, and the sum of the numbers will be 117. What is the value of k?
  • A1
  • B13
  • C14
  • D18
  • E21
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正确答案: B

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