1.

The average age of the boys in a class is 12 years. The average age of the girls in the class is 11 years. There are 50% more girls than boys in the class. Which one of the following is the average age of the class (in years)?

A. 11.2 years
B. 11.4 years
C. 11.6 years
D. 11.8 years
Answer» C. 11.6 years


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