In a class, the average age of 45 boys is 18 years and the average of 35 girls is 15 years. what is the average age of the whole class? Pick:	A) 11 Years	B) 12.6 Years	C) 13 Years	D) 16.6 Years	E) 14 Years
Total age of 80 students   (45X 18+35 X 15) = 1335   Average = 1335/80 = 16.6 Years   16.6 Years)
<result>D</result>
In a class, the average age of 45 boys is 18 years and the average of 35 girls is 15 years. what is the average age of the whole class?