Hello there! Welcome to Gooy’s Mathage Shop!
Mathage = Math + Massage.
This video is the 23rd 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: cool nights by Dixxy. https://soundcloud.com/dixxy-2
Creative Commons — Attribution-ShareAlike 3.0 Unported — CC BY-SA 3.0
Music promoted by Audio Library https://youtu.be/waIbj3X1fJY