Question 618950
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
{{{ (4/5)*60 = 48 }}}
It take the 5 workers 48 minutes to build the wall