The avg. age of a group of 20 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?  Choose the correct choice from the following choices.
A) 22 years	B) 23 years	C) 24 years	D) 25 years	E) 26 years
Total age of 20 students=20*20= 
<gadget id="calculator">20*20</gadget>
<output>400</output>
400   If total age of 4 students=x   Then, (400+x)/(20+4) =(20+1), x=104   So average age of new students=104/4= 
<gadget id="calculator">104/4</gadget>
<output>26</output>
26 years   ANSW26 yearsR:26 years
<result>E</result>
The avg. age of a group of 20 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?