In a manufacturing plant, it takes 36 machines 4 hours of continuous work to fill 6 standard orders. At this rate, how many hours of continuous work by 72 machines are required to fill 12 standard orders?  Choose the correct choice from the following options: A) 4 B) 6 C) 8 D) 9 E) 12
the choices give away the answer..   36 machines take 4 hours to fill 8 standard orders..   in next eq we aredoubling the machines from 36 to 72, but thework is not doubling(only 1 1/2 times),= 4*48/72*12/6 = 4   4ns 4
<result>A</result>
In a manufacturing plant, it takes 36 machines 4 hours of continuous work to fill 6 standard orders. At this rate, how many hours of continuous work by 72 machines are required to fill 12 standard orders?