Homework Help: Alegebra

Posted by Jerry on Thursday, December 17, 2009 at 12:01am.

Working alone it takes Jerry 9 hrs to mop a warehouse. Ruth can mop the same warehouse in 10 hrs. If they worked together how long would it take them?

Alegebra - MathMate, Thursday, December 17, 2009 at 12:37am
Jerry does 1/9 of the work in one hour.
Ruth does 1/10 of the work in one hour.
Together they do 1/9+1/10 = 19/90 of the work in one hour.
How long would it take them together to finish the work ?

Answer this Question

Related Questions

Math - Steinwelt Piano manufactures uprights and consoles in two plants, Plant 1...
Math - Steinwelt Piano manufactures uprights and consoles in two plants, Plant 1...
math - Filling a tank. Two pipes are connected to the same tank. Working ...
Physics - A warehouse worker exerts a constant horizontal force of magnitude 89....
intermediate algebra - Dal and Kim can assemble a swing set in 1/1/2 hrs,working...
Algebra - It takes matt 9 hrs longer to build a wall than it takes chris. ...
math - Find the time for two people working together to complete a task if it ...
Accounting - A company has two major businesses that it operates. One business ...
Math - Bryan and Kim are painting a house. Working together they can paint a ...
Accounting - A company has two major businesses that it operates. One business ...

For Further Reading

First Name:
School Subject:
Answer: