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Old 07-10-2014   #3

Join Date: Dec 2008
Posts: 249

Originally Posted by burgess View Post
Help required to solve algebra 1 homework problem

A wheel that has 14 cogs is meshed with a smaller wheel of 6 cogs. When the smaller wheel has made 21 revolutions, then what is the number of revolutions made by larger wheel?

If the small wheel makes 21 revolutions then it turns through 21 x 6 = 126 cogs.
The larger wheel then makes 126/14 = 9 revolutions
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