18 beavers, working together in a constant pace, can build a dam in 12 hours. How many hours will it take 12 beavers that work at the same pace, to build the same dam?
Choose one.
A) 2.  B) 4.  C) 5.  D) 6  E) 18.
Total Work = 18*12= 
<gadget id="calculator">18*12</gadget>
<output>216</output>
216 Beaver hours   12 Beaver * x=216Beaver hours   x=216 / 12= 
<gadget id="calculator">216 / 12</gadget>
<output>18</output>
18   ANSW18.R:18.
<result>E</result>
18 beavers, working together in a constant pace, can build a dam in 12 hours. How many hours will it take 12 beavers that work at the same pace, to build the same dam?