A factory produces electric bulbs. If 1 out of every 10 bulbs is defective and the factory produces 630 bulbs per day, find the number of defective bulbs produced each day. 13
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Answer: The number of defective bulbs is 63 because the ratio of defective to non-defective is 1:10, so therefore you divide 630 by 10 to find that 1/10 is defective. 63 bulbs are defective.
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