



 
Hi Kevin, This is a rate problem and I know I have to use the rate at which the gardner mows the lawn but I don't know whether to express the rate as lawns per hour or hours per lawn. I let the units tell me what to do. I want an answer in hours when he mows 17 lawns so my equation is going to look like
Thus, in order for the units to cancel I need the rate in hours per lawn This is then my equation which yields I hope this helps,  


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