Monday

December 22, 2014

December 22, 2014

Posted by **otto** on Friday, November 26, 2010 at 9:59am.

- basic algebra -
**drwls**, Friday, November 26, 2010 at 10:13amThere speeds of doing the job separately are 1/8 per hour and 1/12 per hour. Assuming they are working on the same job together and not duplicating work, their combined speed is 1/12 + 1/8 = 5/24 jobs per hour.

The same assignment done together will take 1/(5/24) = 24/5 hours, which is 4 hours and 48 minutes.

**Answer this Question**

**Related Questions**

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

Algebra 2 word problem - just checking to see if i have this problem correct ...

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

checking to see if this is right - just checking to see if i have this problem ...

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

math - A father can do a job as fast as two sons working together. If one sone ...

college - Sammy takes 5 hours longer to complete 300 lines of code the Martin. ...

math - Jack and Jerry can complete a job in 2 hours when working together.If ...

math - Michael and Barry can complete a job in 2 hours when working together. If...

Algebra - jose can complete the job in a hours, and Maria can complete the job ...