What is the average of 1200, 1300, 1400, 1510, 1520, 1530, and 1200?
Options:
A) 1360.47  B) 1355.8  C) 1380  D) 1350  E) 1333
Add 1200, 1300, 1400, 1510, 1520, 1530, and 1200   Grouping numbers together may quicken the addition   sum = 9660   9660/7= 
<gadget id="calculator">9660/7</gadget>
<output>1_380</output>
1380   1380
<result>C</result>
What is the average of 1200, 1300, 1400, 1510, 1520, 1530, and 1200?