A circular rim 20 inches in diameter rotates the same number of inches per second as a circular rim 30 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 ? Choose the correct choice from the following options.
A) 40x
B) 75x
C) 48x
D) 24x
E) x/75
Revolutions - circumference of the rim.   =&gt; 20pi*X*60 = 30pi*Revolutions   =&gt; 2/3 *X *60 = Revolutions =&gt; 40X - Option 40x
<result>A</result>
A circular rim 20 inches in diameter rotates the same number of inches per second as a circular rim 30 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 ?