Nina is training for a marathon. She can run 4 1/2 kilometers in 1/3 of an hour. At this pace, how many kilometers can Nina run in 1 hour
1. 1/3 hr=4 1/2 km
If we want to get 1/3 hour to 1 hour, then we have to multiply by 3. Remember, if you do something to one side of the equation, you have to do it to the other side too for the equation to be true. Therefore, let's multiply 3 on both sides.
2. 3(1/3)hr=3(4 1/2)km=1hr=13 1/2 km
Answer: Nina can run 13 1/2 kilometers in one hour.