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OpenStudy (anonymous):
At one factory, the ratio of defective light bulbs produced to total light bulbs produced is about 3:500. How many light bulbs are expected to be defective when 12,000 are produced?
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OpenStudy (anonymous):
\[\frac{3}{500}=\frac{x}{12,000}\iff x=\frac{3\times 12,000}{500}\]
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