What is the average of 1200, 1300, 1400, 1510, 1520, 1530, 1115, 1120, and 1125?  Choose the correct choice:
A) 1345  B) 1334  C) 1313.33  D) 1350  E) 1325
Add 1200, 1300, 1400, 1510, 1520, 1530, 1115, 1120, and 1125   Grouping numbers together may quicken the addition   sum = 11820   11820/9 =1313.33   1313.33
<result>C</result>
What is the average of 1200, 1300, 1400, 1510, 1520, 1530, 1115, 1120, and 1125?