The average (arithmetic mean) of eight numbers is 8. If 4 is added from each of five of the numbers, what is the new average?
Choose the correct choice from the following answers:  A) 4.5  B) 8.9  C) 10.5  D) 4.5  E) 5.6
Sum of 8 numbers = 8*8= 
<gadget id="calculator">8*8</gadget>
<output>64</output>
64   If 4 is added from each of five of the numbers , we added  4*5= 
<gadget id="calculator"> 4*5</gadget>
<output>20</output>
20 from the total sum   Sum of 8 number after adding 4 from each of five of the numbers=64+20= 
<gadget id="calculator">64+20</gadget>
<output>84</output>
84   New average= 84/8= 
<gadget id="calculator">84/8</gadget>
<output>21/2 = around 10.5</output>
10.5   Answer 10.5
<result>C</result>
The average (arithmetic mean) of eight numbers is 8. If 4 is added from each of five of the numbers, what is the new average?