SOLUTION: She had $12. She bought 3 pens at $4g and spent $3g on lunch. How much had she left

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Question 630764: She had $12. She bought 3 pens at $4g and spent $3g on lunch. How much had she left
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
She had $12. She bought 3 pens at $4g and spent $3g on lunch. How much had she left
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what is $4g ?