题目内容
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题目材料:
If one item is to be randomly selected from the items whose manufacturing cost is greater than $140, what is the probability that the item selected will be one whose manufacturing time is greater than 60 minutes?
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A$$\frac{3}{8}$$
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B$$\frac{1}{2}$$
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C$$\frac{5}{8}$$
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D$$\frac{2}{3}$$
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E$$\frac{3}{4}$$
E显示答案