Posted by **Sha** on Monday, November 10, 2008 at 6:51pm.

Thomas in 4 hours. Julia can do the same job in 6 hours. How many hours will it take the two of them to do the job if they work together?

- math -
**economyst**, Wednesday, November 12, 2008 at 9:02am
Assuming there is no change in productivity..

In one hour, Thomas does 1/4=25% of the job, while Julia does 1/6=16.66%. Combined they would do 25%+16.66% = 41.66% of the job in 1 hour. So, 1/.4166= 2.4 hours

## Answer this Question

## Related Questions

- Algebra - Thomas can do a job in 4 hours. Julia can do the same job in7 hours. ...
- Algebra II - Thomas can do a job in 4 hours. Julia can do the same job in 6 ...
- math - Tomas can do a job in 4 hours. julia can do the same job in 6 hours. how ...
- math - if you do a job in 4 hours, and your friend can do the same job but in 6 ...
- math - Mary can clean the house in 6 hours. Her younger sister Ruth can do the ...
- math - A father can do a job in a certain number of hours. His son takes twice ...
- Math - Barry can do a certain job in 3 hours, whereas it takes Sanchez 5 hours ...
- college algebra word problem - Wayne can do a job in 6 hours, while Susan can do...
- elementary and intermediate algebra - Barry can do a certain job in 9 hours, ...
- math - A father can do a job as fast as two sons working together. If one sone ...