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Mathematics, 25.11.2021 21:50 monei1998

The cost of 4 books is $18.00 and the cost of 4 pens is $20.00. Find the cost of six similar books and six similar pens.

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The cost of 4 books is $18.00 and the cost of 4 pens is $20.00. Find the cost of six similar book...
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