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Pat has two sheets of large, square stamps. One sheet consists of 9 stamps arranged in a 3-by-3 square. (That's 3 stamps by 3 stamps, not 3 inches by 3 inches.) The other sheet consists of 36 stamps arranged in a 6-by-6 square. The stamps on each sheet are separated by perforated creases. All the stamps on both sheets are the same shape and size.

The total length of the creases on the 3-by-3 sheet is 18 inches.

How many inches of creases does the 16-by-16 sheet have?

 Oct 24, 2020
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here are 4 lines on the 3 x 3  page encompassing 12 borders ....  18 / 12 =  1.5 inch side length of stamp

the 6 x 6 will have 10 lines  each covering 6 edges     6 edges x 1.5 inches x 10 = 90 inches

 Oct 24, 2020

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