Five cats can catch 5 mice in 5 minutes. At this rate, how many cats are needed to catch 100 mice in 100 minutes? (Hint: it is not 100.)
Here's a way to think about it: It's kind of like man-hours. If it takes one person 2 hours to do a job we say that it takes 2 man-hours to do that job. We then can assume that if two people work on the job it will take only 1 hour. (Ignoring any coordination problems and other ...
Ratio and proportion are used to solve a cat-and-mouse problem.