1. It takes Doug 6 days to reroof a house. If Doug's son helps him, the job...

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1. It takes Doug 6 days to reroof a house. If Doug\'s son helps him, the job can be completed in 4 days. How long would it take Doug\\\'s son, working alone, to do the job?

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Niebels Methods, Standards and Work Design

ISBN: 978-0073376318

13th edition

Authors: Andris Freivalds, Benjamin Niebel

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Posted Date: Oct 26, 2020 09:20 AM

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1. It takes Doug 6 days to reroof a house. If Doug's son helps him, the job...

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Niebels Methods, Standards and Work Design

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