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 100 revolutions. How many revolutions does the second wheel make in covering d feet?	Answers:	A) 100xy	B) 100y - x	C) 100x/y	D) 100y/x	E) 100x - y
First Wheel with diameter x inches ----&gt; So the circumference = x*pi --------- (1)   Second Wheel with diameter y inches ----&gt; So the circumference = y*pi --------- (2)   Revolutions = distance/circumference   So, from equation (1)   100 = D/(x*pi)   D = 100 * x * pi ---------- (3)   From equation (2)   Revolutions = D/(y*pi) = (100 * x * pi) / (y*pi) = 100x/y   Answer (100x/y)
<result>C</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 100 revolutions. How many revolutions does the second wheel make in covering d feet?