Posted on on December 18, 2012
Vivian Kerr is a regular contributor to several GMAT and SAT websites, allowing her to flex her intellectual muscle while she is in between film and stage project as an actress.
SAT word problems scare you? Me too! Especially once they start talking about distance, work rates, trains leaving stations, etc. Sometimes the SAT likes to throw a particularly challenging word problem towards the end of a section, and this type of question can often involve a concept called “average speed.” Well, I know what “average” means, so this should be easy, right? Unfortunately, “average speed” has nothing to do with the mathematical average, or the mean. This is the formula to know: Average Speed = Total Distance / Total Time.