The average age of a group of 20 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?	Choose the correct choice from the following options:
A) 22 years B) 30 years C) 42 years D) 32 years E) None of these
Answer   The average age of a group of 20 students is 20.   Therefore, the sum of the ages of all 20 of them = 20 * 20= 
<gadget id="calculator">20 * 20</gadget>
<output>400</output>
400   When two new students join the group, the average age increases by 2. New average= 22.   Now, there are 22 students.   Therefore, the sum of the ages of all 22 of them = 22 * 22= 
<gadget id="calculator">22 * 22</gadget>
<output>484</output>
484   Therefore, the sum of the ages of the two new students who joined= 484 - 400= 
<gadget id="calculator">484 - 400</gadget>
<output>84</output>
84   And the average age of each of the two new students= 84/2= 
<gadget id="calculator">84/2</gadget>
<output>42</output>
42 years.   Answer 42 years
<result>C</result>
The average age of a group of 20 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the two new students who joined the group?