The average age of a group of 12 students is 20years. If 4 more students join the group, the average age increases by 1 year. The average age of the new students is Choose the correct choice:	A) 22	B) 23	C) 24	D) 25	E) 26
total age of 12 std=20*12   total age of 16 std=21*16   total age of 4 std=(21*16)-20*12= 
<gadget id="calculator">(21*16)-20*12</gadget>
<output>96</output>
96   avg of 4 std=(96)/4= 
<gadget id="calculator">(96)/4</gadget>
<output>24</output>
24   ANSWER:24
<result>C</result>
The average age of a group of 12 students is 20years. If 4 more students join the group, the average age increases by 1 year. The average age of the new students is