Saturday

February 28, 2015

February 28, 2015

Posted by **Brian** on Thursday, April 16, 2009 at 7:17pm.

- Algebra -
**Reiny**, Thursday, April 16, 2009 at 9:54pmJose's rate = job/a

Maria's rate = job/b

combined rate = job/a + job/b

= job(a+b)/(ab)

combined time = job/combined rate

= job/[job(a+b)/(ab)]

= ab/(a+b)

**Answer this Question**

**Related Questions**

math - Alex takes 3 hours longer to complete a certain job than Barry does. If ...

College Algebra - It takes Todd 3 hours longer than Tom to paint a 4x5 feet ...

math - if you do a job in 4 hours, and your friend can do the same job but in 6 ...

algebra - Sammy can complete a programming job in 8 hours if he works alone. ...

college algebra - sammy can complete programming job in 8 hours alone. marilyn ...

algebra - A new machine that deposits cement for a road requires 13 hours to ...

math - A father can do a job in a certain number of hours. His son takes twice ...

MATH - An application of a rational function is T = (AB)/(A+B), which gives the...

algebra - it takes an HP laserjet 1300 printer 10 minute longer to complete a ...

college algebra word problem - Wayne can do a job in 6 hours, while Susan can do...