We’ll give it to you straight: this strategy for finding the average, or arithmetic mean, of a set of numbers isn’t for everyone. If you master it, though, you can save some serious time on extra-tough GMAT Quant questions.
To show you how it works, Jen and Jess have to get a little “mean” in their exploration of averages.
Don’t worry: Jen isn’t nearly this mean to Jess in real life.
Read the full article: Knewton “Mean” Girls: Advanced GMAT Math Tips, No Sugarcoating