Working together at their respective constant rates, Machine A and Machine B can produce 600 units in 8 hours. Working alone, Machine B would complete that same output in 50% more time. If Machine A were to work on its own for an 8-hour shift, what percent of the 600 unit total would it produce?  Choose the correct option
A) 25
B) 37
C) 50
D) 30
E) 75
1/A+1/B= 1/T   1/A +1/12= 1/8 (50% more of 8 is 12)   1/A= 1/24   Machine A can produce 600 units in 24 hrs, so it can produce  600*8/24= 
<gadget id="calculator"> 600*8/24</gadget>
<output>200</output>
200 units is 8 hrs.   200 is 30% of 600.   30 is the answer
<result>D</result>
Working together at their respective constant rates, Machine A and Machine B can produce 600 units in 8 hours. Working alone, Machine B would complete that same output in 50% more time. If Machine A were to work on its own for an 8-hour shift, what percent of the 600 unit total would it produce?