Asked by Tomas

A gear with 60 teeth is meshed to a gear with 40 teeth. If the larger gear revolves at 20 revolutions per minute, how many revolutions does the smaller gear make in a minute?

not just an answer please

(A)13 1/3
(B)3
(C)300
(D)120
(E)30
Answered by Steve
The total teeth per minute on both gears must be the same, so
60*20 = 40x
x = 30
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