Final answer:
Yolanda's 778-mile trip at an average speed of 50 miles per hour will take approximately 15.6 hours.
Step-by-step explanation:
To calculate the time it will take for Yolanda to complete her trip, we can use the formula given below:
Time = Distance / Speed
In this case, the distance is 778 miles and the speed is 50 miles per hour. Plug in these values into the formula:
Time = 778 miles / 50 miles per hour
Divide to find the time:
Time = 15.56 hours
Rounding to the nearest tenth of an hour, the trip will take approximately 15.6 hours.