I need help with this question

In the image AC = 12, AF = 4, BGIGE = 2/5 and AD bisects ZCAE. Calculate AB. (Note: BG/GE = 2/5 means that BG = 2k and GE = 5k for some unknown number k; it can be helpful to label this on your picture!) B F G D E CGIGF = by the Angle Bisector Theorem * .(Give your answer in reduced form.) Using the highlighter trick: the blue triangle is (Give your answer in alphabetical order.) The three red points do lie on a single line, so by Melelaus' Theorem AB = (Give your answer in reduced form.)