Question 1015847: Juan can mow a lawn with a hand mower in 4 hours. His friend Pedro can mow the same lawn with his power mower in 3 hours.How long will it take the two men to mow the lawn if they work together maintaining their own pace?
Answer by FrankM(1040)   (Show Source):
You can put this solution on YOUR website! Keep in mind, there are multiple ways to solve this. Mine is just one method I find easy to explain, and repeatable for students.
Juan can mow .25 lawns per hour.
Pedro can mow 1/3 lawns per hour.
Together they mow 7/12 lawns per hour so it will take 12/7 hours or 1 hour, 42.86 minutes per whole lawn.
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