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OpenStudy (anonymous):
Michael wants to make some extra money during spring break. He buys a lawn mower for $169.99 plus 9% sales tax. If he charges $15 to mow a lawn, how many lawns will he need to mow before the mower is paid off?
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OpenStudy (anonymous):
169,99 * 1,09 <--- 9% right? = 185,2891 == 185,3 185,3 / 15 <--- 15 dollars for each. 12,35333 == 13 lawns!
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