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OpenStudy (anonymous):
The numerator and the denominator of a fraction are thirteen and fifty, respectively. When a certain number is added to this numerator and subtracted from this denominator, the resulting fraction has a numerator to denominator ratio of two to one. What is the number?
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OpenStudy (anonymous):
13 + x)/(50 - x) = 2 13 + x = 100 - 2x 3x = 87 x = 29
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