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A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. If the smaller wheel has made 21 revolutions, what will be the number of revolutions made by the larger wheel? | |
A. | 15 [Wrong Answer] |
B. | 12 [Wrong Answer] |
C. | 21 [Wrong Answer] |
D. | 9 [Correct Answer] |