Step-by-step explanation:
So first off we want to find out how many miles Nina can ride in 3,600
For this we have to convert 63,360 feet into miles
If there are 5,280 feet in one mile than we need to see how many times 5,280 goes in to 63,360
divide 63,360 by 5,280: you get 12
This means that she can bike 12 miles in 3,600 seconds
3,600 seconds is the same as an hour
Answer:
Nina can bike 12 miles per hour
