Question

A city has 4 new houses for every 9 old houses. If there are 28 new houses in the city, how many old houses are there?

Answer 1

63 old houses

Explanation:

4/9 = 28/x

28 times 9 divided by 4 =63

(cross multiply)

Answer 2

There would be 63 old houses because 28/63 is the same as 4/9