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 the correct option.
A) 11 Years	B) 12.6 Years	C) 13 Years	D) 13.5 Years	E) 14 Years
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   12.6 Years)
<result>B</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?