Thread: DA Inequalities

sum two inequalities and you'll get that z>0, then from the first premise you understand that since m>3z, then m is also >0 and the sum of m and z is positive

Originally Posted by kooljoshi

Another way to solve the problem could be
using a) we get z < m/3 not sufficiet to answer the question
using b) we get z > m/4 not sufficient to answer the question

using both m/4 < z < m/3. if m is -ve then this relationship should cannot hold therefore m > 0 & so is z . therefore m + z > 0.
Hence c .

Yes, good solution, requires not just simple operations, but little logic.