The answer to this question is true
I believe the answer is Olgiarchy.
I really hope this helps! I am not definite on the answer but I do feel like it’s the most correct answer that I am aware of. :)
Assuming we don't know the speed capabilities of the tractor, the time it would take simply be the rate in miles per hour. It has a direct correlation between speed and time spent, so the miles the tractor needs to plow is unneeded.