What is the average (arithmetic mean) of all multiples of 10 from 10 to 600 inclusive?	Choose the correct option:
A) 190
B) 195
C) 305
D) 205
E) 210
This question can be solved with the Average Formula and 'bunching.'   We're asked for the average of all of the multiples of 10 from 10 to 600, inclusive.   To start, we can figure out the total number of terms rather easily:   1(10) = 10   2(10) = 20   ...   60(10) = 600   So we know that there are 60 total numbers.   We can now figure out the SUM of those numbers with 'bunching':   10 + 600= 
<gadget id="calculator">10 + 600</gadget>
<output>610</output>
610   20 + 590= 
<gadget id="calculator">20 + 590</gadget>
<output>610</output>
610   30 + 580= 
<gadget id="calculator">30 + 580</gadget>
<output>610</output>
610   Etc.   Since there are 60 total terms, this pattern will create 30 'pairs' of 610.   Thus, since the average= (Sum of terms)/(Number of terms), we have...   (30)(610)/(60) =305   Final Answer: 305
<result>C</result>
What is the average (arithmetic mean) of all multiples of 10 from 10 to 600 inclusive?