There are 22 girls in hostel whose average age is decreased by 2 months, when one girl 18 yrs is replaced by a new boy.Find the age of new girl.  Choices.
A) 1 year	B) 1 years 2 months	C) 3 years 8 months	D) 4 years	E) None
Total decrease = 22 * 2= 
<gadget id="calculator">22 * 2</gadget>
<output>44</output>
44 months= 3 years 8 months   3 years 8 months
<result>C</result>
There are 22 girls in hostel whose average age is decreased by 2 months, when one girl 18 yrs is replaced by a new boy.Find the age of new girl.