AMC 12A 2007 Problem 19

Triangles A B C and A D E have areas 2007 and 7002 , respectively, with B= (0,0), C=(223,0), D=(680,380), and E=(689,389). What is the sum of all possible x-coordinates of A ?

Answer Choices
A. 282
B. 300
C. 600
D. 900
E. 1200