Question:
Two trains leave from the same station, one going north at
Last updated: 7/7/2022
![Two trains leave from the same station, one going north at](https://media.kunduz.com/media/sug-question/raw/84191522-1657218426.787261.jpeg?h=512)
Two trains leave from the same station, one going north at 30 miles/hr and one going west at 40 miles/hr. The one going west leaves 1 hour later than the one going north. When the northbound train is 120 miles from the station, how fast is the distance between the trains changing?