Posted by **Marta** on Tuesday, April 27, 2010 at 11:13pm.

Solve

A contractor finds that it takes a crew A 6 hours to construct a wall of a certain size. Crew B takes 8 hours to construct a wall of the same size. How long will it take if they work together?

## Answer This Question

## Related Questions

- math - A library crew can shelve books in six hours. Another crew can do the job...
- Algebra - There is a water tank with a drain of an unknown size that is always ...
- Algebra - A boat's crew rowed 7.5 downstream,with the current, in 1.5 hours. The...
- algebra - A boat's crew rowed 13.5 miles downstream, with the current, in 1.5 ...
- Math - Alice takes 4 hours to paint a wall. With sam's help, they can paint the ...
- MATH NEED HELP! - I have four questions in one. 1. A library crew can shelve ...
- Maths - you need to go on a trip to other ancient sites. Your plane takes off at...
- math - A boat's crew rowed 12 miles downstream, with the current, in 1.5 hours. ...
- Algerbra - A boat's crew rowed 10.5 miles downstream, with the current, in 1.5 ...
- math - How many cement blocks are needed to construct a wall 0.5 ft. thick, 6 ft...

More Related Questions