PLEASE HELP I BEG I NEED JUST THIS ONE PROBLEM:

In the trapezoid ABCD ( AB ∥ CD ) point M∈ AD , so that AM:MD=3:5. Line l ∥ AB and going trough point M intersects diagonal AC and leg BC at points P and N respectively. Find: BC:BN.

Please give Statement/Reasoning proof as well. THANK YOU PLEASEE

Trapezoid ABCDthe value of BC:BN is BC:BN=8:3.What is Trapezoid?trapezoidis aquadrilateralin American and Canadian English that has at least one pair ofparallel sides. Atrapeziumis the term used in British and other varieties of English. In Euclidean geometry, atrapezoidis invariably a convex quadrilateral. Thetrapezoid’sparallelsides are referred to as its bases.parallellinesdivide the transversal into the segments with equal ratio, therefore, BN:NC=AM:MDTrapezoid ABCDthe value of BC:BN is BC:BN=8:3.Trapezoid, click on the link