GMAT On Demand: Three Classic DS Problems Involving Systems of Equations

by Knewton, Mar 5, 2011

In this video, Jess and Rich cover some of the key strategies for solving Data Sufficiency questions involving systems of equations. There are three sample problems to try on your own:

Just pause the video at 00:37, 5:30, and 8:00 to try your hand at each one. After you've given the questions a shot, stay tuned for Jess and Rich's step-by-step explanations plus some helpful tips and shortcuts to use when you see problems like this on test day.

For more Data Sufficiency strategies, tune in to the previous installments of this quantitative strategy lesson:

• Don't Solve Data Sufficiency Problems
• Testing Cases in Data Sufficiency
• How to Simplify Data Sufficiency Problems

For more on-demand video help, check out these sessions on Critical Reasoning, Intro to Quant, and Sentence Correction.