5.
0.2x = 1
x = 5
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Four tenths of a mile is .4 miles. When asking how many, treat as x*.4 miles = 1 mile and solve for x. This results in x=1/.4 = 2.5.
A mile is a unit of length. A square mile is a unit of area. The two units are therefore incompatible.
Well, if there are 5,280 ft per mile and you need to know how many feet 17% of a mile is... do the math. .17(5280)= 897.6 feet.
If one lap around the track is 0.3 miles, you would need to complete approximately 3.33 laps to cover a mile. This is because 1 mile is equivalent to 1 divided by 0.3, which equals 3.33 laps.
So, there are 5280 feet in 1 mile. Therefore, we simply need to divide 31680 by 5280. 31680 feet/ 5280 (feet/mile) = 6 miles (The unit 'feet' will cancel out and the unit 'mile' will be left)