Gmat Prep - number properties

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Gmat Prep - number properties

by mttorii » Tue Aug 28, 2007 7:25 am
I can't figure this out ...
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by beny » Tue Aug 28, 2007 9:52 am
Adding the two inequalities together tells you that z>0. The first statement mentions that m-3z > 0; because z is positive, m must also be positive for this condition to hold. Therefore, the sum of the two terms would also be positive.