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Mathematics 13 Online
OpenStudy (anonymous):

Roberta is thinking about joining the food co-op store. If she pays $10.00 to join, she will get 10% off on all the groceries she buys there. How much must she buy before her savings equal her membership fee? a)$10.00 b)$50.00 c)$100.00 d)$1,000.00

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