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by gmat_and_me » Mon Jun 11, 2012 5:44 am
Perimeter is sum of lengths of all sides = 2 * (b + 3 + a + b) < 30
=> a + 2b + 3 < 15 => a + 2b < 12. Solve the equation for a and b.
Should be a, b, d, and f unless I made some silly mistake :(

HTH
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