Posted by **carolina** on Friday, August 24, 2012 at 1:57am.

math question: you want to mat and frame a 5x 7 photograph. The perimeter of the outside of the mat is 60 inches. the mat is twice as wide at the top and the bottom as it is on the sides. Find the dimensions of the mat

- algebra -
**Steve**, Friday, August 24, 2012 at 10:25am
photo: 5x7

mat: 5+2*2w x 7+2*w

2(5+4w + 7+2w) = 60

w = 3

so, if the mat is 3" wide on the sides, and 6" wide top and bottom, it is 17x13 if it's a landscape. Or, it might be 19x11, if it's a portrait.

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