These problems are all the same pretty much: they either want you to find the average value, or they want you to find the "c" on the interval [a,b] at which the value of the function is equal to the average value of the function. That wasn't clear enough? You should watch this video!
Average Value Word Problems
These problems use the same formula and steps as the ones in the previous video, except they're buried in word problems about average speed or average flow or average price. If a problem contains the word "average", you're probably looking at one of these.
If you do not have an account, you should get one, because it is awesome! You can save a playlist for each test or each chapter, and save your "greatest hits" into a "watch right before the final" list (not that we recommend cramming, but when in Rome...)