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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Two pipes running simultaneously can fill a tank in 2 hours and 40 minutes. After the larger pipe had run for 3 hours the smaller piper was also turned on and the tank was full 40 minutes later. How long would it take the smaller pipe to fill the tank alone?
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Two classmates have decided to read all the volumes in a popular series of books. Mia has already read 12 volumes and will continue to read new ones at a rate of 1 volume per week. Beth, who hasn't started reading the series yet, will read 4 volumes per week. At some point, Beth will catch up with Mia and they will be reading the same book. How long will that take? How many volumes will each girl have read by then? In ? weeks, the girls will each have read ? volumes in the series.
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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?