Quantcast XP Math - Forums - View Single Post - A problem on Wheel and revolutions
View Single Post
Old 07-10-2014   #2
Dark88Dragon
 
Dark88Dragon's Avatar
 
Join Date: Aug 2013
Posts: 20
Default

14 : 6 = x : 21

x = (21 * 6) / 14

You can count the cogs, 21 revolutions * 6 cogs = 126 cogs
Divide the whole number of cogs though the number of cogs on the larger wheel. They have the same distance on the larger wheel.
126 / 14 = 9
Dark88Dragon is offline