A circular rim 20 inches in diameter rotates the same number of inches per second as a circular rim 5 inches in diameter. If the smaller rim makes x revolutions per second, how many revolutions per minute does the larger rim makes in terms of x ?	Pick.
A) 48pi/x B) 75x C) 48x D) 240x E) x/75
Revolutions - circumference of the rim.   =&gt; 20pi*X*60 = 5pi*Revolutions   =&gt; 4/1 *X *60 = Revolutions =&gt; 240X - Option 240x
<result>D</result>
A circular rim 20 inches in diameter rotates the same number of inches per second as a circular rim 5 inches in diameter. If the smaller rim makes x revolutions per second, how many revolutions per minute does the larger rim makes in terms of x ?