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sweet [91]
2 years ago
10

The numerator and the denominator of a fraction are thirteen and fifty, respectively. When a certain number is added to this num

erator and subtracted from this denominator, the resulting fraction has a numerator to denominator ratio of two to one. What is the number?
Mathematics
2 answers:
Talja [164]2 years ago
7 0
(13 + x)/(50 - x ) = (2/1)
Cross Multiply
2(50-x) = 1(13 + x)
100 - 2x = 13 + x
add 2x to both sides
100 -2x + 2x = 13 + x + 2x
100 = 13 + 3x
Subtract 13 from both sides
100 - 13 = 13 - 13 + 3x
87 = 3x
divide both sides by 3
29 = x

(13 + 29)/(50-29) = 42/21 = 2 to 1 ratio
ASHA 777 [7]2 years ago
6 0

The correct answer is 29.

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MissTica

The graph of the inequality will be B. on a coordinate plane, a dashed straight line has a positive slope and goes through (0, negative 4) and (3, negative 2). Everything to the right of the line is shaded.

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