SOLUTION: Four workers can build a wall during one hour, how much time is required for five of these workers in order to build that wall

Question 618950: Four workers can build a wall during one hour, how much time is required for five of these workers in order to build that wall
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
If 4 workers can build 1 wall in 1 hour,
1 worker will take 4 times longer, or 4 hours to build 1 wall
5 workers can build the wall in 1/5 of that time, or 4/5 hours

It take the 5 workers 48 minutes to build the wall
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