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 ?

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
RELATED QUESTIONS
If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by chitra)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by ankor@dixie-net.com)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by ptaylor)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by Mathtut)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by stanbon)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by edjones)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by ptaylor)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by Alan3354)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by scott8148)

If Sam can do a job in 4 days that Lisa can do in 6 days and Tom can do in 2 days, how... (answered by JimboP1977)