SOLUTION: if 2 people can paint a fence in 12 hours how long does it take 3 people each working at the same rate? i know how to do it but i want to know what is the fast way of doing it? can

Algebra ->  Rate-of-work-word-problems -> SOLUTION: if 2 people can paint a fence in 12 hours how long does it take 3 people each working at the same rate? i know how to do it but i want to know what is the fast way of doing it? can      Log On


   



Question 234005: if 2 people can paint a fence in 12 hours how long does it take 3 people each working at the same rate? i know how to do it but i want to know what is the fast way of doing it? can you show me the fast way
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
2 people for 12 hrs is 24 person-hours of labor (2 times 12)

24 person-hours for 3 people means 8 hrs of work (24 divided by 3)