Question

Two thirds of the families in smithville own their own homes. The total number of home owning families there is 480. How many families live in smithville?

Answer 1

X- the total number of families in Smithville.
(2/3)x  - the number of home owning families.
At the same time,  the number of home owning families is 480.

(2/3)x=480
x=480*3/2=720.

720 families live in Smithville.