MathDB
CNCM Online R2P2

Source:

August 8, 2020
CNCMProblem Discussion

Problem Statement

There is a rectangle ABCDABCD such that AB=12AB=12 and BC=7BC=7. EE and FF lie on sides ABAB and CDCD respectively such that AEEB=1\frac{AE}{EB} = 1 and CFFD=12\frac{CF}{FD} = \frac{1}{2}. Call XX the intersection of AFAF and DEDE. What is the area of pentagon BCFXEBCFXE?
Proposed by Minseok Eli Park (wolfpack)