Can you answer this SAT math question? Check out Gruber’s Complete SAT Guide 2014 for more practice problems like this!
Two wheels have diameters of 12 inches and 18 inches, respectively. Both wheels roll along parallel straight lines at the same linear speed until the large wheel has revolved 72 times. At this point, how many times has the small wheel revolved?
(A) 32
(B) 48
(C) 72
(D) 108
(E) 162
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