SOLUTION: please help me solve this: Jim harvests his plants in 8 hours and Kulas harvests the same in just 4 hours. how many hours will it take them to harvest plants working together?

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Question 1061373: please help me solve this:
Jim harvests his plants in 8 hours and Kulas harvests the same in just 4 hours. how many hours will it take them to harvest plants working together?
Answer by ikleyn(52752) About Me  (Show Source):
You can put this solution on YOUR website!
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please help me solve this:
Jim harvests his plants in 8 hours and Kulas harvests the same in just 4 hours. how many hours will it take them
to harvest plants working together?
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According to the condition, Jim harvests 1%2F8 of the area per hour, while Kulas harvests 1.4 of the area.

Working to gether, they harvest 1%2F8+%2B+1%2F4 = 3%2F8 of the area per hour.

Hence, it will take them 8%2F3 hours = 2 2%2F3 hours = 2 hours and 40 minutes to complete the job working together.


Answer.  It will take them 8%2F3 hours = 2 2%2F3 hours = 2 hours and 40 minutes to complete the job working together.

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".