Final answer:
To calculate the distance traveled by a car moving at 68 miles per hour for 5 hours and 15 minutes, convert the time to 5.25 hours and then multiply by the speed to get 357 miles.
Step-by-step explanation:
Calculating Distance Traveled
To find out how many miles a car travels in 5 hours and 15 minutes at an average speed of 68 miles per hour, you would first need to convert the time into a decimal. Since there are 60 minutes in an hour, 15 minutes is a quarter of an hour or 0.25 hours. Therefore, the time in hours is 5 + 0.25, which equals 5.25 hours.
Next, to calculate the distance traveled, use the formula:
Distance = Speed × Time.
So the distance traveled by the car would be:
Distance = 68 mph × 5.25 hours = 357 miles.
The car travels a total of 357 miles in 5 hours and 15 minutes at an average speed of 68 miles per hour.