The formula for average speed is,
S= Total Distance Covered / Total Time Taken
In the given problem,
The total distance covered is 162 miles.
Since only the times are given, we have to determine how many hours did the car traveled from 7:30am to 10:30am.
To get the number of hours: First, subtract the hours, then the minutes. Hours: 10-7=3
Minutes: 30-30=0
Therefore,
S = 162miles/3hrs
S = 54miles/hr
The average speed of the car is 54miles/hr.
