Pam´s house is about 200 miles south of Justin´s. A group leaves Justin´s house at 7:00am and and arrives at Pam´s at 10:00am. From Pam´s house, they travel to Frederick´s house, which is about 80 miles west of Pam´s. They leave from Pam´s at 10:00am and arrive at Frederick´s house at 11:30am. What is the velocity of the vehicle in miles per hour?
