SOLUTION: Maggie can mow the lawn in 6 hours. If her sister Julie helpers her, it only takes 2 hours. How long would it take Julie to mow the lawn alone?
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Question 1101061: Maggie can mow the lawn in 6 hours. If her sister Julie helpers her, it only takes 2 hours. How long would it take Julie to mow the lawn alone? Found 2 solutions by josmiceli, ikleyn:Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = Julie's time in hrs mowing alone
Maggie's rate of mowing:
[ 1 lawn mowed ] / [ 6 hrs ]
Julie's rate of mowing:
[ 1 lawn mowed ] / [ t hrs ]
Their rate mowing together:
[ 1 lawn mowed ] / [ 2 hrs ]
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Add their rates of mowing to get
their rate mowing together:
Multiply both sides by hrs
Julie will take 3 hrs to mow the lawn alone
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check:
OK
Maggie and Julie mow together of the lawn area per hour.
Maggie working alone mows of the lawn area per hour.
It means that Julie mows - = - = = of the lawn area per hour working alone.
Hence, it will take 3 hours for Julie to mow the lawn working alone.
