3. Lisa, Karen, and Tom can build a tree house in 2 hours working together. If Lisa can doit 3 times faster than Tom and Karen can finish the job twice as fast as Tom, how longwill it take Karen to complete the task on her own?

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Answered: 3. Lisa, Karen, and Tom can build a…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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on a 123-mile trip from Location A to Location B, Abby drove 10 miles per hour slower than she did on her 180-mile trip from Location C to Location D. The first trip (A-B) took 1 hr 40 mins longer than the second trip (C-D). how fast did abby drive on her first trip(A-B)?
A farmer wants to find the best time to take her hogs to market. The current price is 84 cents per pound and her hogs weigh an average of 80 pounds. The hogs gain 5 pounds per week and the market price for hogs is falling each week by 2 cents per pound. How many weeks should she wait before taking her hogs to market in order to receive as much money as possible? She should wait weeks.
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3. Lisa, Karen, and Tom can build a tree house in 2 hours working together. If Lisa can do it 3 times faster than Tom and Karen can finish the job twice as fast as Tom, how long will it take Karen to complete the task on her own?