GAUSS8 2007 Problem 8

Past Contests GAUSS8 GAUSS (GR. 8) - 2007
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1

The Gauss family has three boys aged 7, a girl aged 14, and a boy aged 15. What is the mean (average) of the ages of the children?

Answer Choices
A. 9
B. 7
C. 11
D. 14
E. 10