You can put this solution on YOUR website! Think!, with each revolution of the wheel, the distance covered will be equal to the circumference of the wheel.
So you will first need to work out the circumference (C) of a circle (wheel) whose diameter (D) is 30 inches. Substitute and as an approximation. inches.
Now that you have the wheel's circumference, you know the the wheel will cover a distance of 94.2 inches with each revolution.
So how many times can you get 94.2 inces from 1 mile?
How many inches are there in 1 mile?
1 mile = 5280 feet and...
1 foot = 12 inches., so...
1 mile = 5280ft.(12in./ft)
1 mile = 63,360 inches. Finally, you will divide 63,360 inches by 94.2 inches per revolution. revolutions per mile.