Machine A can make 350 widgets in 1 hour, and machine B can make 250 widgets in 1 hour. If both machines work together, how much time will it take them to make a total of 1200 widgets?  Choose the correct choice from the following answers.
A) 2 hour and 20 minutes
B) 2 hour and 24 minutes
C) 2 hour and 30 minutes
D) 2 hour and 36 minutes
E) 2 hour and 00 minutes
(350+250)t=1200   600t=1200   t=2   t=2 hour and 00 minutes   Answer: 2 hour and 00 minutes
<result>E</result>
Machine A can make 350 widgets in 1 hour, and machine B can make 250 widgets in 1 hour. If both machines work together, how much time will it take them to make a total of 1200 widgets?