Mathematics, 30.05.2020 00:06, lexie223

It takes my father 3 hours to plow our cornfield with his new tractor. Using the old tractor it takes me 5 hours. If we both plow for one hour before I go to school, how long will it take him to finish the plowing?

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It takes my father 3 hours to plow our cornfield with his new tractor. Using the old tractor it take...