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Mathematics, 16.02.2021 06:00 teriateria

Michael mowed lawns during the summer to earn extra money. He charged each customer $30 to cut the grass plus $9 for each hour of work. One customer paid Michael $93. How long did it take Michael to mow that customer's lawn?

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Michael mowed lawns during the summer to earn extra money. He charged each customer $30 to cut the g...
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