Answer:
275 yards of ribbon need to be ordered
Step-by-step explanation:
Figure out how much ribbon, in inches, is needed altogether by multiplying the amounts of ribbon by how many boxes are expected to sell for both box sizes:
Small Boxes:
20 in • 225 boxes = 4500 in of ribbon needed
Large Boxes:
30 in • 180 boxes = 5400 in of ribbon needed
Add it up to see how much you need:
4500 + 5400 = <u>9900 in of ribbon needed in total</u>
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There are 36 inches in 1 yard, so divide 9900 by 36 to see how many yards need to be ordered:
9900 ÷ 3 = 275 yards
(Alternatively, you could divide 9900 by 12 inches in a foot to get 825 feet. Then you would divide 825 by 3 feet in a yard to get 275 yards)