The yard care staff can mow 45 lawns in a 10-hour work day. Each of the 9 workers can mow the same number of lawns per hour. How many lawns can one worker mow per hour?
Thanks for that answer, Guest....here's another way to see this.......if the crew can mow 45 lawns in 10 hours, each hour they must mow 1/10 of this = 4.5 lawns
So........
4.5 lawns per hour : 9 workers = [ 1/2 ] lawn per hour : 1 worker
