Elena works out on a treadmill. She uses a program that combines running and walking. She knows that she runs at 0.2 miles per minute and she walks at 0.1 miles per minute. At the end of her workout, the treadmill showed her workout distance was 8 miles.
(A) Give three possible combinations of walking and running times that would result in Elena having a workout distance of 8 miles.
(B) Write an equation that will relate the number of minutes Elena runs and walks to the total distance of her workout.