Posted by lisa on Tuesday, June 25, 2013 at 1:31pm.
the class is 50 students 30 like chocolate, 25 like vanilla, and 18 like both, which like neither.

math  PsyDAG, Tuesday, June 25, 2013 at 4:25pm
If 18 like both, then (3018) like just chocolate and (2518) like vanilla.
50  18  12  7 = ?

math  Daniella T. Ampong, Monday, December 14, 2015 at 8:20pm
18Ã·2=9
309=21
259=16
16+21=37
5037=13
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