To find the distance of a trip, you can use the formula:
Distance = Speed × Time
First, you need to convert the time to hours since the speed is given in kilometers per hour.
45 minutes = 45/60 hours = 0.75 hours
Now, plug the values into the formula:
Distance = 90 km/h × 0.75 h
Distance = 67.5 kilometers
So, the distance of the trip is 67.5 kilometers.