So, we know the ratio is 32:8
8 is a factor of 32, so we can divide both sides by 8:
The new ratio is 4:1
This means that it takes 4 people to build one house.
To satisfy the needs of the question, let's multiply both sides by 20:
80:20
It will take 80 people to build 20 houses.
It would take 80 people to build 20 houses because you you divide 32 by 8 and get 4 and then multiply by 20 to get 80
