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Mathematics, 07.01.2021 20:40 pk4mk

The postal service offers flat-rate shipping for priority mail in special boxes. Today, Duncan shipped 10 small boxes and 9 medium boxes, which cost him $149 to ship. Meanwhile, Hannah shipped 7 small boxes and 1 medium box, and paid $46. How much does it cost to ship these two sizes of box?

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The postal service offers flat-rate shipping for priority mail in special boxes. Today, Duncan shipp...
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