Here is a challenging motion problem about two different length trains and how long it takes them to pass each other going in the same direction and opposite directions. At first glance, there doesnÕt seem to be enough information given...

These types of problems cause many people to be distressed over algebra. In this video, Sal looks at a problem where three people, each at set distances apart, are traveling at different constant speeds. We need to know how long it will...

In this video, Sal solves a word problem sent in by a listener with two cyclists riding towards each other over a given time. It is an interesting problem regarding ratios and the relationship between distance, rate, and time. He shows...