What is the gear ratios of a gear train with an input gear of 48 teeth and an output gear of 12? A. 1:4
B. 1:3
C. 4:1
D. 3:1

D: 4:1

Explanation:

If you divide 48 by 12, you get 4. 12 is 1/4 of 48. Therefore, you keep it at 4:1.

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