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I picked b. The stem states that m and n are greater than 0. Statement 2 says that x is greater than 0. If m, n and x are all greater than 0 the equation must be greater than 0 too. The answer is C. Where did I go wrong?
Last edited by ggarr on 02 Mar 2007, 03:40, edited 5 times in total.
If you apply that
Is (m+x-n-x)/(n+x) > (m-n)/n
Is (m-n)/(n+x) > (m-n)/n
m > n ...so numerators are positive...but X is not known to be -ve or +ve...
so NOT SUFF
x >0..so Denominator on left is greater than that on right...
but Is m-n negative or positive? Not known so we can NOT tell if left > right ( example here is 2 < 5 but -2 > -5... so we need to know the sign)