Posted by **Lucy** on Saturday, March 8, 2008 at 7:29pm.

Thomas can do a job 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 it they work together?

- Algebra II -
**Ms. Sue**, Saturday, March 8, 2008 at 7:40pm
With two of them working together, then their times will be cut in half. Thomas can do it in 2 hours, while Julia does it in 3 hours.

(2 + 3)/ 2 = 2 1/2 hours

- Algebra II -
**drwls**, Saturday, March 8, 2008 at 7:51pm
Not quite.

Their combined rate of doing the rob is

1/4 job/h + 1/6 job/h = 5/12 job/h

5/12 job/h * T (hr) = 1 job

T = 12/5 = 2 2/5 hours

## Answer This Question

## Related Questions

- Algebra - Thomas can do a job in 4 hours. Julia can do the same job in7 hours. ...
- math - Thomas in 4 hours. Julia can do the same job in 6 hours. How many hours ...
- math - Tomas can do a job in 4 hours. julia can do the same job in 6 hours. how ...
- 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 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 ...
- math - if you do a job in 4 hours, and your friend can do the same job but in 6 ...
- Algebra - One painter can finish a certain job 5 hours before another painter ...
- math - 8 workers together at the same rate finished a painting job in 5 hours. ...

More Related Questions