Another Gmat Prep question, which I saw in my test todayFeruza Matyakubova wrote:is m+z>0
(1) m-3z>0
(2) 4z-m>0
i think the OA is E,
but im very confused....
1) m>3z insuf
2) 4z>m insuf
1+2)
m-3z>0
4z-m>0
+
------------
z>0 ; since m>3z --> m>0
so m+z >0
Hence, C
