Question 22182
First you would add 2,400+3,800+6,760; which equals 12,960
Then divide 24 into 12,960 which equals 540
If you multiply 4,860 by 2 divided by 18 you get 540
So if it took 18 crew of people to clean a 4,860 sq.ft. in 3 hours then it took 24 people to clean the three houses in 3 hours