At a bake sale there were 90 items sold total. If 42 of the items sold were cookies and the rest were brownies what is the ratio of brownies sold to cookies sold?
Firstly, you do 90 - 42 to get the amount of brownies sold, which is 48. Then, you put 42 and 48 into a ratio like 42:48. After that, all you need to do is simplify to get 7:8.
