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? A. 0.8 da

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Question 148602: . 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?
A. 0.8 days
B. 1.09 days
C. 1.23 days
D. 1.65 days
E. 1.97 days

Answer by ankor@dixie-net.com(12704) (Show Source):
You can put this solution on YOUR website!
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?
;
Let x = time required when all work together
:
Let the completed job = 1
:
+ + = 1
Multiply equation by 12 and you have::
3x = 2x + 6x = 12
:
11x = 12
x =
x = 1.09 days