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30-09-2016
Mathematics

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janice bought a book for $4.00. she also bought 5 pens. she spent a total of $39.00. how much did each pen cost?

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Аноним Аноним

01-10-2016

39=5*pen+4 => 5*pen=39-4=35 => pen=35/5 => pen=7. Each pen costs $7 .

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