Three machines operating independently, simultaneously, and at the same constant rate can fill a certain production order in 48 hours. If one additional machine were used under the same operating conditions, in how manyfewerhours of simultaneous operation could the production order be fulfilled? Pick: A) 6 B) 9 C) 12 D) 27 E) 48
If 3 Machines can do the work in 48 hr then 4 Machines can do the work in   3/4*48= 
<gadget id="calculator">  3/4*48</gadget>
<output>36</output>
36 Hrs. hence time saved will be 12hr   option 12 is the correct answer
<result>C</result>
Three machines operating independently, simultaneously, and at the same constant rate can fill a certain production order in 48 hours. If one additional machine were used under the same operating conditions, in how manyfewerhours of simultaneous operation could the production order be fulfilled?