Posted by **don ** on Saturday, August 11, 2012 at 3:48am.

a large cogwheel contains 117 cogs, and a small one contains 52 cogs.if the large wheel revolves 20 times,find the amount of revolutions of the small wheel.

- math -
**Henry**, Saturday, August 11, 2012 at 7:10pm
Rev. = 20*(117/52) = 45.

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