the jenkins started their trip with a full tank of gas and 48,961 miles on their car.They stopped and filled the gas tank seven hours later with 14.0 gallons of gas.At that time the car total mileage was 49,381. what was the car average speed in miles per hour for the first seven hours of the trip?
(49381-48961)/7 = 420/7 = 60
To find the car's average speed in miles per hour for the first seven hours of the trip, we need to calculate the distance traveled during that time.
1. Subtract the initial mileage from the total mileage at the end of seven hours:
Total distance traveled = Total mileage at the end - Initial mileage
= 49,381 miles - 48,961 miles
= 420 miles
2. Divide the total distance traveled by the time taken:
Average speed = Total distance traveled / Time taken
= 420 miles / 7 hours
= 60 miles per hour
Therefore, the car's average speed in miles per hour for the first seven hours of the trip was 60 miles per hour.