SOLUTION: one machine plows a field in 4 days ,other does in 6 days.how long does it take using both machine?

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Question 996993: one machine plows a field in 4 days ,other does in 6 days.how long does it take using both machine?
Answer by CubeyThePenguin(3113) About Me  (Show Source):
You can put this solution on YOUR website!
Machine A plows 1/4 of the field in a day.
Machine B plows 1/6 of the field in a day.

Combined: 1/4 + 1/6 = 5/12 ---> 12/5 days to plow the field