Find the average of first 6 multiples of 5?  Choose the correct choice from the following answers:
A) 10 B) 15 C) 12.5 D) 13 E) 17.5
average = (5+10+15+20+25+30)/6= 
<gadget id="calculator">(5+10+15+20+25+30)/6</gadget>
<output>35/2 = around 17.5</output>
17.5   Answer is 17.5
<result>E</result>
Find the average of first 6 multiples of 5?