Answer: 60 miles/hour
Explanation:
Departure time: 5:30
Arrival time: 8:30
Distance = 180 miles
Total time it took to travel = 3 hours.
Recap: Distance = (Speed) × (Time)
Plug the number into the formula:
180miles = (speed) × 3hours
Solve for speed by dividing both sides by 3 hours:
180miles/3hours = Speed
Simplify:
60 miles/hour = Speed