July 19, 2015
A weighted average is really just a type of average, but there is a bit different way that you can think about these types of problems that will be very helpful in many others. In fact, the methods used in this chapter will help you with with Rates, Work, and Mixture problems that we will discuss in the word problems section. Spend the time to understand it now, and you will be ahead of the game. The ability to handle gmat weighted averages quickly can free up 2-4 minutes on the exam for othe...