AB = 80 AC = 200 BD = 36 DE = 18 C = 100 AC = 200 and since C=100 A(100) = 200 A=200/100=2 AB = 80 and since A=2 2B = 80 B = 80/2 = 40 BD = 36 and since B=40 40D = 36 D = 36/40 = 9/10 DE = 18 and since D=9/10 (9/10)E = 18 E = 18÷(9/10) = 18×(10/9) = 20 Answer: E=20 Edwin