SOLUTION: Kian can paint a wall in 9 hours, if Audrey helped the job is done in 6 hours, how many hours it will taked if Audrey worked alone?

Question 1065527: Kian can paint a wall in 9 hours, if Audrey helped the job is done in 6 hours, how many hours it will taked if Audrey worked alone?
Found 3 solutions by Fombitz, ikleyn, MathTherapy:
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Rate x Time = Output
For Kian,

For Kian and Audrey,

So,

So to do one wall,

Answer by ikleyn(52914)   (Show Source): You can put this solution on YOUR website!
.
Kian can paint a wall in 9 hours, if Audrey helped the job is done in 6 hours, how many hours it will taked if Audrey worked alone?
~~~~~~~~~~~~~~~~~~~~~~~~

Kian paints of the wall surface per hour. Together with Audrey, they paint of the wall surface per hour. Now it is clear that Audrey, working alone, paints = = of the wall surface per hour. Hence, it will take 18 hours for Audrey to paint the wall, if he works alone.

SOLVED.

There is a wide variety of similar solved joint-work problems with detailed explanations in the lessons
    - Using Fractions to solve word problems on joint work,
    - Solving more complicated word problems on joint work,
    - Selected joint-work word problems from the archive
in this site.

Read them and get be trained in solving joint-work problems.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook under the topic "Rate of work and joint work problems" of the section "Word problems".

If you have questions or want to say "thanks", then please mention the ID number of this problem (# 1065527) in your response.

Answer by MathTherapy(10557)   (Show Source): You can put this solution on YOUR website!

Kian can paint a wall in 9 hours, if Audrey helped the job is done in 6 hours, how many hours it will taked if Audrey worked alone?

Time Audrey takes:
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