If the Average (mean ) of 11 positive temperatures is x degrees fahrenheit, then the sum of the 3 greatest of these temperatures, in degrees Fahrenheit, could be	Choose one:
A) 6x  B) 9x  C) 5x/3  D) 3x/2  E) 3x/5
Let the 5 numbers be 1,2,3,4,5,...,11 (since no restrictions are given). There mean is 6 (x).   Now the sum of greatest three would be 9+10+11= 
<gadget id="calculator">9+10+11</gadget>
<output>30</output>
30   so the answer has to be 9x....that is option 9x
<result>B</result>
If the Average (mean ) of 11 positive temperatures is x degrees fahrenheit, then the sum of the 3 greatest of these temperatures, in degrees Fahrenheit, could be