6th Grade Math
posted by Mika .
If a plane is going on a 500 mile trip, how many minutes will it take to get there for a speed of 400, 300, 200, and 100 mph? For 500 it wil obviously take 1 hour, but my brain is dead today and I can't figure out the other four.

timeinminutes=distance/speed * 60

500= 1 hour
400= about 2.1 hours
300= about 2.8 hours
200= about 4.2 hours
100= 5 hours