The average of 45 results is 10. The average of first 22 of them is 16 and that of last 22 is 20. Find the 23 result?  Choose the correct answer.
A) 600
B) 480
C) 538
D) 650
E) 560
23th result = sum of 45results - sum of 44 results   10*45-16*22+20*22 = 450-352+440= 
<gadget id="calculator">450-352+440</gadget>
<output>538</output>
538   Answer is 538
<result>C</result>
The average of 45 results is 10. The average of first 22 of them is 16 and that of last 22 is 20. Find the 23 result?