college algebra word problem
posted by jenny .
Wayne can do a job in 6 hours, while Susan can do the same job in 7 hours. How long would it take them to do the job if the worked together?
Thank you!!

college algebra word problem 
bobpursley
the rate for each is 1job/6hrs,or 1job/7hours
timetogehter=1job/combined rate
= 1/(1/6 + 1/7)
go for it. 
college algebra word problem 
Dylan
OK so find LCD which is 24, than multiply 4*1 and 3*1 making first fraction 4/24 and the second 3/24 which is 7/24. Than flip and 24/7 making the answer somewhere around 3/7 hours and I'm not sure on how to convert that into more technical answer... So what do you think?
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