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Bob and Jack share an apartment. If each month Bob pays a dollars and Jack pays b dollars, what percent of the total cost does Bob pay?
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A.$$\frac{a}{b}%$$
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B.$$\frac{b}{a}%$$
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C.$$\frac{a}{a+b}%$$
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D.$$100\frac{a}{b}%$$
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E.$$100\frac{a}{a+b}%$$
E显示答案
