Ms. Warren ran at 6 mph for 20 minutes. After the run, she walked at 2 mph for 30 minutes. How many miles did she run and walk in total?
20 minutes is 20/60=1/3 of an hour.
Ms. Warren ran 6/3=<T>divide(6, 3)=2.0 miles.
30 minutes is 30/60=1/2 of an hour.
Ms. Warren walked 2/2=<T>divide(2, 2)=1.0 mile.
Ms Warren ran and walked 2+1=<T>add(2, 1)=3 miles in total.
