A, B, C, D and E are 5 consecutive points on a straight line. If BC = 3CD, DE = 8, AB = 5 and AC = 11, what is the length of AE? Choices: A) 15 B) 17 C) 19 D) 21 E) 23
AC = 11 and AB = 5, so BC = 6.   BC = 3CD so CD = 2.   The length of AE is AB+BC+C21+21E = 5+6+2+8= 
<gadget id="calculator">5+6+2+8</gadget>
<output>21</output>
21   The answer is 21.
<result>D</result>
A, B, C, D and E are 5 consecutive points on a straight line. If BC = 3CD, DE = 8, AB = 5 and AC = 11, what is the length of AE?