A, B, C, D and E are 5 consecutive points on a straight line. If BC = 2CD, DE = 7, AB = 5 and AC = 11, what is the length of AE?
Choose the correct choice from the following: A) 19 B) 21 C) 23 D) 25 E) 27
AC = 11 and AB = 5, so BC = 6.   BC = 2CD so CD = 3.   The length of AE is A21+21C+CD+DE = 5+6+3+7= 
<gadget id="calculator">5+6+3+7</gadget>
<output>21</output>
21   The answer is 21.
<result>B</result>
A, B, C, D and E are 5 consecutive points on a straight line. If BC = 2CD, DE = 7, AB = 5 and AC = 11, what is the length of AE?