SOLUTION: Tommy can paint a fence in 9 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by himself?

Question 1065119: Tommy can paint a fence in 9 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by himself?
Answer by ikleyn(52767) (Show Source): You can put this solution on YOUR website!
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Tommy can paint a fence in 9 hours. If his friend Huck helps, they can paint the fence in 1 hour. How fast could Huck paint the fence by himself?
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Tommy paints 1/9 of the fence in one hour.

Huck and Tommy together paint 1 fence in one hour.

Hence, Huck paints 1 - (1/9) =  (9/9)-(1/9) = 8/9 of the fence per hour.

Thus, Huck can paint the fence in 9/8 hour or   hours (1 hr and 7 min 30 sec).

The problem was solved today under this link
https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1065124.html

https://www.algebra.com/algebra/homework/coordinate/word/Linear_Equations_And_Systems_Word_Problems.faq.question.1065124.html

Since you submitted it repeatedly, I copied that solution and slightly edited it to make it more understandable.

It is a typical joint work problem.
For a wide variety of similar solved joint-work problems with detailed explanations see 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".

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