Your mother takes you to your grandparents house for dinner. she drives 30 minutes at a constant speed of 20 miles per hour. she reaches the highway and quickly speeds up and drives for another 60 minutes at a constant speed of 60 miles per hour.
your older brother drove to your grandparents house in a different car but left from the same location at the same time. if he traveled at a constant speed of 50 miles per hour who went farther?