Math
Fred runs a lap every 2 minutes and Mark runs a lap every 2.5 minutes. They start together. How long will it be before they are next to each other again?
Reply
Answers
It will take 5 minutes for Fred and Mark to be next to each other again. Fred will have run 2 laps in that time, and Mark will have run 2 laps. Since Fred runs a lap every 2 minutes, and Mark runs a lap every 2.5 minutes, it takes 2.5 minutes for them to run the same number of laps. Therefore, it will take 5 minutes for them to be next to each other again.
