Raul=distance in miles was 31 1/4 his start time was 1: 50 pm and end time was 4: 20pm. if raul rode at constant speed ,how fast did he travel in miles per hour?

Raul took 2 hours and 30 mins to bike 31 1/4 miles. Well 31 1/4 is equivalent to 31.25 and 2hr 30mins is equivalent to 2.5. Now we need to divide the distance by the time to get the rate in mph. 31.25/2.5 = 12.5  So Raul rode at 12.5 miles per hour.