SOLUTION: Jums can paint a room in 2 days. Janus can paint the same room in 4 days. How long would it take them to paint the room if they work together?

Algebra ->  Rate-of-work-word-problems -> SOLUTION: Jums can paint a room in 2 days. Janus can paint the same room in 4 days. How long would it take them to paint the room if they work together?      Log On


   

Question 1086549: Jums can paint a room in 2 days. Janus can paint the same room in 4 days. How long would it take them to paint the room if they work together?
Answer by ikleyn(52805) About Me  (Show Source):
You can put this solution on YOUR website!
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Answer. 4%2F3 of the day.


Because their combined rate of work is 1%2F2%2B1%2F4 = 2%2F4+%2B+1%2F4 = 3%2F4 of the room per day.


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The lesson to learn from this solution:

        You can add individual rates of work to get the combined rate of work.

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It is typical joint work problem.

There is a wide variety of similar solved joint-work problems with detailed explanations in this site. 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


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".