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Mathage = Math + Massage.
This video is the 20th episode of GMAT Challenge 2018. In this challenge, I attempt to solve all problems (problem solving & data sufficiency) from GMAT Official Guide 2018. I try to use the most efficient method. Hopefully some of these videos could help someone.
Track: Sunny Island (VLOG) by Scandinavianz https://soundcloud.com/scandinavianz
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Music promoted by Audio Library https://youtu.be/DnxpC0ieRoc