SOLUTION: If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it?
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Question 176395: If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how long would the job take if Sam, Lisa, and Tom worked together to complete it?
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
sam can do 1/4 of the job per day
lisa can do 1/6 of the job per day
tom can do 1/2 of the job per day
:
together they can do
:
job per day
:
job per day
:
of job per day
:
so 11/12t=1(job)
:
t=12/11 days
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