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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 6-by-6 sheet have?

 Jul 10, 2019

See the answer here: https://artofproblemsolving.com/community/c2393h1037309s3_stamp_and_sheet_problem

 Jul 10, 2019

Thank you Guest!

musicalnote  Jul 10, 2019

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