Posted by lisa on .
the class is 50 students 30 like chocolate, 25 like vanilla, and 18 like both, which like neither.

math 
PsyDAG,
If 18 like both, then (3018) like just chocolate and (2518) like vanilla.
50  18  12  7 = ? 
math 
Daniella T. Ampong,
18Ã·2=9
309=21
259=16
16+21=37
5037=13