20 beavers, working together in a constant pace, can build a dam in 6 hours. how many hours will it take 12 beavers that work at the same pace, to build the same dam?
Options.
A) 10 . B) 4 . C) 5 . D) 6 E) 8 .
<gadget id="calculator">6 * 20</gadget>
<output>120</output>

<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<result>A</result>
20 beavers, working together in a constant pace, can build a dam in 6 hours. how many hours will it take 12 beavers that work at the same pace, to build the same dam?
divide(multiply(6, 20), 12)
"total work = 20 * 6 = 120 beaver hours 12 beaver * x = 120 beaver hours x = 120 / 12 = 10 answer : a"