Answer:
52miles/hour
I hope I am right
Step-by-step explanation:
[tex]7.45 - - - 8.00 = 15 [/tex]
[tex]8.00 am ----> 2pm = 6hours[/tex]
[tex]2pm ---> 2.15 = 15 \: min [/tex]
[tex]total \: = 6hours \: 30 \: min = 6.5 \: hour[/tex]
Speed= distance/time = 338/6.5
Speed = 52miles/hour
[tex]\text{Find his average speed:}\\\\\text{We know that he left at 7:45 AM and also arriving at his location at 2:15 PM}\\\\\text{During his trip, he cumulated a total of 338 miles}\\\\\text{Lets find how long he drove for:}\\\\\text{If we add 6 hours to 7:45, we would get 5:45, therefore needing 30 min more}\\\\\text{This means that he drove for 6 hours and 30 min, or 6.50}\\\\\text{To find his average speed, divide the miles he drove by the time he was}\\\text{on the road:}\\\\338/6.50=52[/tex]
[tex]\boxed{\text{52 mph}}[/tex]
