In a certain quiz that consists of 10 questions, each question after the first is worth 4 points more than the preceding question. If the 10 questions on the quiz are worth a total of 320 points, how many points is the third question worth? Pick one.
A) 39 B) 24 C) 22 D) 20 E) 18
x   x+4   x+8   x+12   x+16   x+20   x+24   x+28   x+32   x+36   10x+180=320   10x=140   x=14   3rd question = x+8 = 14+8= 
<gadget id="calculator">14+8</gadget>
<output>22</output>
22   Answer 22
<result>C</result>
In a certain quiz that consists of 10 questions, each question after the first is worth 4 points more than the preceding question. If the 10 questions on the quiz are worth a total of 320 points, how many points is the third question worth?