posted by Mishka on .
You go to the video store to rent 5 movies for the weekend. Movies rent for $2 and $3. You spend $13. How many $2 movies did you rent?
I'll be glad to check your answer.
I don't know how to do
number of $2 movies --- x
number of $3 movies --- 5-x
solve for x
2x + 3(5-x) = 13
Why didn't you just do trial and error. There are only 5 choices.