SOLUTION: It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours. How long would it take them working together? (Round your

Question 1054724: It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours. How long would it take them working together? (Round your answer to two decimal places.)
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours. How long would it take them working together? (Round your answer to two decimal places.)
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4*5/(4+5) = 20/9 hours
Answer by ikleyn(52810)   (Show Source): You can put this solution on YOUR website!
.
It takes Mandy 4 hours to proof a chapter of Hawkes Learning Systems' Intermediate Algebra book and it takes Kim 5 hours.
How long would it take them working together? (Round your answer to two decimal places.)
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Mandy: of the chapter per hour. Kim: of the chapter per hour. Together: = = of the chapter per hour. Answer. It would take hours = hour, working together.

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A wide variety of similar joint-work problems were solved for you 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".

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