Isaac works through problems with you (and Sal from Khan Academy haha ;)! Enjoy and reach out with questions/feedback! --- Free content survey - what else would you like help with? https://forms.gle/isE9nyEdTpCqjXYQ8 -  LINK TO SAL'S VIDEO THAT I AM TALKING ABOUT: https://youtu.be/UlHo2cxKA84 ---Reach your dream GMAT score in 1/2 the normal time:  --- http://thegmatstrategy.com/ -Live classes: https://www.testcrackers.org/ - Enter TGS at checkout and save!--- GMAT is a registered trademark of the Graduate Management Admission Council. The Graduate Management Admission Council does not endorse or sponsor, nor is affiliated in any way with The GMAT Strategy or the material presented therein --- Tags: GMATstudy