Posted by Anonymous on Saturday, October 6, 2012 at 6:39pm.
Of 30 runners surveyed ,23 go running in the morning and 15 go running in the evening . Seven of the runners surveyed go running in both the morning and the evening .How many runners go running in the morning but not the evening?

math  Ms. Sue, Saturday, October 6, 2012 at 6:43pm
23  7 = ?
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