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OpenStudy (anonymous):
If 5 tractors can plow a field in 4 hours, how many hours will it take 3 tractors to plow the field? I know the answer, I just don't know how to solve it...
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OpenStudy (jennychan12):
first think of the scenario. 5 tractors, 4 hours. 3 tractors. it obviously has to take more time right? so it's inverse relationship |dw:1357861470262:dw|
OpenStudy (anonymous):
it is inverse ratio. you must mutliply numbers of tractors with hours. results must be equal.
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