In a class, the average age of 30 boys is 13 years and the average of 20 girls is 12 years. what is the average age of the whole class?	Choose one:
A) 12.5 Yrs  B) 14.2 Yrs  C) 12.3 Yrs  D) 12.6 Yrs  E) 12 Yrs
Total age of 50 students   (30X 13+20 X 12) = 630   Average = 630/50= 
<gadget id="calculator">630/50</gadget>
<output>63/5 = around 12.6</output>
12.6 Years   ANSWER IS 12.6 Yrs
<result>D</result>
In a class, the average age of 30 boys is 13 years and the average of 20 girls is 12 years. what is the average age of the whole class?