Use the following scenario to answer the question below: A young equestrian loved to ride her horse all day long, dreaming of the day
she would ride in the Kentucky Derby. One day in early April, she left home at
10:00 am and rode her stallion at a nice, steady 10 miles per hour away from
her house. At noon a call came in from the Derby saying she was in! Her
father immediately jumped on his scooter to try and track her down and tell
her the good news.
Riding at a breezy 15 miles per hour, after how many hours on the scooter will
her father catch up to her?