Two identical machines have the ability to produce both nuts and bolts. However, it takes 1 second to produce a bolt but 2 seconds to produce a nut. What is the fastest the two machines, working together, can produce 800 nuts and 800 bolts?  Pick one:
A) 1,200 seconds B) 1,500 seconds C) 1,750 seconds D) 2,000 seconds E) 3,000 seconds
To minimize the amount of time, we should make both machines work all the time while producing 800 nuts and 800 bolts.   Two machines to produce 800 bolts will need   (800*1)/2= 
<gadget id="calculator">  (800*1)/2</gadget>
<output>400</output>
400 seconds.   Two machines to produce 800 nuts will need (800*2)/2= 8000 seconds.   Total = 400 + 800 = 1,200.   1,200 secondsnswer: 1,200 seconds.
<result>A</result>
Two identical machines have the ability to produce both nuts and bolts. However, it takes 1 second to produce a bolt but 2 seconds to produce a nut. What is the fastest the two machines, working together, can produce 800 nuts and 800 bolts?