To determine the speed, we will divide the total distance covered by the total time spent traveling.
[tex]speed=distance\div time[/tex][tex]speed=412.5miles\div7.5hrs[/tex]
Note that 7 1/2 is just equal to 7.5.
Divide the numbers above and the answer is:
[tex]speed=55miles\text{ }per\text{ }hour[/tex]
Answer:
Ivan was driving at a constant speed of 55 miles per hour.
