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It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it takes X and Y, if they work together to mow the lawn? |
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Answer» It takes two hours for a person X to mow the lawn. Y can mow the same lawn in four hours. How long (in minutes) will it takes X and Y, if they work together to mow the lawn? |
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