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16-09-2015
Mathematics

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Joan needed $100 to buy a graphing calculator for her math class. Her neighbor will pay her $5 per hour to babysit and her dad gave her $10 for mowing the lawn. What is the minimum amount of hours she will need to babysit in order for her to buy her calculator?

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bre0517 bre0517

16-09-2015

$100-$10=$90
$90 / $5 = 18
Joan would need to work 18 hours

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