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Mathematics, 27.03.2020 17:23 piyonax

Tyler bought 3 calculators and 7 pens for $67.80. Barbara bought 6 calculators and 2 pens for $92.40. How much does each pen cost?

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Tyler bought 3 calculators and 7 pens for $67.80. Barbara bought 6 calculators and 2 pens for $92.40...
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