The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is
Choose one
A) 22  B) 88  C) 27  D) 99  E) 11
Explanation:   Other side=\inline {\color{Black}\sqrt{\frac{225}{4}-\frac{81}{4}}ft}   =\inline {\color{Black}\sqrt{\frac{144}{4}}ft}   =\inline {\color{Black}6ft}   Area of closest =(6 * 4.5) sq.ft =27 sq.ft   Answer: 27) 27
<result>C</result>
The average age of the boys in a class is 16 years and that of the girls is 15 years. The average age for the whole class is