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 539755: 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 mananth(16946) (Show Source):
You can put this solution on YOUR website! Sam 4 hours
He does 1/ 4 job in 1 hour
Lisa 6 hours
she does 1/ 6 of thejob in 1 hour
Tom 2 hours
It does 1/ 2 of the job in 1 hour
Together they will do 1/ 4 + 1/ 6 + 1/ 2
Together they will do 11/12 of the job in one hour
So they will take 1 1/9 hours
OR in decimals
So they will take 1.09 hours
m.ananth@hotmail.ca
