A wheel that has 4 cogs is meshed with a larger wheel of 12 cogs. If the smaller wheel has made 20 revolutions, what will be the number of revolutions made by the larger wheel?	Pick
A) 8  B) 4  C) 5  D) 6  E) 7
Let the number of revolutions made by the larger wheel be p   More cogs, less revolutions (Indirect proportion)   Hence we can write as   4 : 12 :: p : 20   ⇒p=80/12   =7   ANSW7R:7
<result>E</result>
A wheel that has 4 cogs is meshed with a larger wheel of 12 cogs. If the smaller wheel has made 20 revolutions, what will be the number of revolutions made by the larger wheel?