



 
Wade, You need to think in terms of rates. Maggie can mow the lawn in 6 hours so she mows at 1/6 of a lawn per hour. You don't know how long it takes Julie to mow the lawn so let's say it takes j hours. Thus Julie mows the lawn at 1/j lawns per hour. Together they can mow the lawn in 2 hours so together their rate is 1/2 a lawn per hour. Thus
Find j. I hope this helps,  


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