160,000 divided into 4 workers in 5 days = 40,000
and then to find out how much a worker get's per day would be 40,000/5=8,000
So 1 worker gets's paid 8,000 every day so, if you know that 1 person a day gets paid 8,000 then you would multiply by 5 so 8,000x5= 40,000
So 5 workers in a day in total would get 40,000 dollars.
