Brittany is rowing at a constant rate. She covers 20 miles in 7 hours. How many more hours will it take her to cover her 110 mile tour?
20/7 = 110/x
20x = 770
x = 38.5 hours
38.5 - 7 = 31.5 more hours
To find out how many more hours it will take Brittany to cover her 110 mile tour, we need to determine her speed in miles per hour.
We can calculate her speed by dividing the total distance covered by the total time taken.
Brittany covered 20 miles in 7 hours, so her speed is 20 miles / 7 hours = 2.857 miles per hour.
Now, we can calculate how many more hours it will take her to cover the remaining 110 miles by dividing the distance by her speed.
110 miles / 2.857 miles per hour ≈ 38.47 hours.
Therefore, it will take Brittany approximately 38.47 more hours to cover her 110 mile tour.