SOLUTION: 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 savin

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Question 690236: 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?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +g+ = the dollars worth of groceries she must buy
+.1g+=+10+
+g+=+10%2F.1+
+g+=+100+
She must bury $100 worth of groceries