Answer:
10
Explanation:
To solve this, we have to do 4 divided by 2/5, because there are stops every 2/5 mile of a 4-mile track.
To make dividing easier, you can write 4 as a fraction, which would be 4/1
Now, divide:
4/1 ÷ 2/5
Remember that when you divide a fraction by another fraction, you can multiply the first fraction by the reciprocal of the second fraction and get the same fraction.
The reciprocal of 2/5 is 5/2.
So 4/1 x 5/2 = 20/2, which can be simplified as 10.
So there are 10 stops. ^-^