A wheel has a diameter of x inches and a second wheel has a diameter of y inches. The first wheel covers a distance of d feet in 60 revolutions. How many revolutions does the second wheel make in covering d feet?
Select
A) 60x-y  B) 30x+y  C) 30x-y  D) 60x+y  E) 60x/y
A wheel covers 2πr distance in one revolution. where r= diameter/2   First wheel covers d feet in 60 rev. =&gt; d= 60* 2π * (x/2)   Second wheel covers d feet in let's say P revolutions; =&gt; d = P* 2π * (y/2)   comparing both equations:-   =&gt; p= (60∗2π∗x/2)/(2π∗y/2)   =&gt; 60x/y   Answer :- 60x/y
<result>E</result>
A wheel has a diameter of x inches and a second wheel has a diameter of y inches. The first wheel covers a distance of d feet in 60 revolutions. How many revolutions does the second wheel make in covering d feet?