The average of 45 results is 9. The average of first 22 of them is 15 and that of last 22 is 20. Find the 23 result?	Choose the correct choice
A) 515  B) 480  C) 750  D) 650  E) 560
23th result = sum of 45results - sum of 44 results   9*45-15*22+20*22 = 450-330+440 = 515   515nswer is 515
<result>A</result>
The average of 45 results is 9. The average of first 22 of them is 15 and that of last 22 is 20. Find the 23 result?