Respuesta :

Answer: 60 miles/hour

Step-by-step 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

The answer is 60 miles per hour