Posted by Vic on Wednesday, July 2, 2014 at 7:17pm.
The dimensions of a page are 12 in. by 10 in. and it is supposed to contain 80in2 of the printed region. What should the margin be if all the margins are the same?

algebra  Ms. Sue, Wednesday, July 2, 2014 at 7:22pm
80 in^2 = 10 in by 8 in.
That leaves a margin of 1 inch on all four sides of the printed area.

algebra  Steve, Wednesday, July 2, 2014 at 7:22pm
(122x)(102x) = 80
Solve that for x, or just note that
80 = 10x8, so both dimensions are reduced by 2", making a 1" margin all around.
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