The avg. age of a group of 24 students is 20 years.If 4 more students join the group,the avg age increases by 1 year.The avg age of the new student is?	Select:  A) 22 years  B) 23 years  C) 24 years  D) 25 years  E) 27 years
Total age of 12 students=24*20= 
<gadget id="calculator">24*20</gadget>
<output>480</output>
480   If total age of 4 students=x   Then, (480+x)/(24+4) =(20+1), x=108   So average age of new students=108/4= 
<gadget id="calculator">108/4</gadget>
<output>27</output>
27 years   ANSW27 yearsR:27 years
<result>E</result>
The avg. age of a group of 24 students is 20 years.If 4 more students join the group,the avg age increases by 1 year.The avg age of the new student is?