What is the sum of the multiples of 3 from 33 to 60, inclusive?  Choose the correct answer.
A) 465
B) 470
C) 452
D) 450
E) 460
The formula we want to use in this type of problem is this:   Average*Total Numbers=Sum   First, find the average by taking the sum of the F + L number and divide it by 2:   A = (F + L)/2   Second, find the total numbers in our range by dividing our F and L numbers by 7 and add 1.   (60/3) - (33/3) + 1   Multiply these together so what we show 465verage*Total Numbers=Sum   (33 + 60)/2 * (60/3) - (33/3) + 1 = Sum   93/2 *10= 
<gadget id="calculator">93/2 *10</gadget>
<output>465</output>
465   465
<result>A</result>
What is the sum of the multiples of 3 from 33 to 60, inclusive?