Studying for the GMAT can be tough. In the mean time, let’s make sure your math score is above average by reviewing averages! Consider the following problem: The average (arithmetic mean) of six numbers is 14. After one of the numbers is removed, the average (arithmetic mean) of the remaining numbers is 16. What number has been removed? To solve this problem, all you need to remember is the definition of an average: average = (sum [...]

A heard of wildebeests decided that, since they were in Africa anyway, they might as well go see Victoria Falls. It took them two days to get there, during which they spent 21 hours traveling and covered a total of 123 miles. On the second day, they traveled 2 miles per hour faster than they did on the first day, but they also spent 3 fewer hours traveling on the second day than they did [...]

On the GMAT, Critical Reasoning questions present you with a decision that someone has made and ask you to choose a statement that would either strengthen or weaken the justification for that decision. Consider the following example problem: At the World Wide Wicket Company, J. Pierrepont Finch decides to increase production of wickets even though sales last quarter fell by 10%. Which of the following, if true, would provide the best justification for his decision? [...]