The question asks how long does it take to clean two miles so i would start off by finding how many yards are in two miles
There is 1760 Yards in a mile.
That means that in 2 miles there is 2x1750yards which is 3520.
If it takes 5 minutes to clean 200 yards, dividing 3520 by 200 will give you the number of 5 minutes does it take to clean up the yard.
3520/200=17.6
This means that it will take (17.6) 5 minutes to clean up 2 miles
To find how many minutes that is you have to multiply 17.6 to 5
(17.6)(5)=88
Therefore it will take 88 minutes to clean up 2 miles of yard section.