hello!
What is
of 12?
In order to find it, we should divide 12 by 4:-
3
Now, solve our word problem:-
Matthew bought 12 roses.
of these roses were white.
And we already know how to solve this problem :)
Hence,
![\bigstar{\boxed{\pmb{3~of~the~roses~were~white}}}](https://img.qammunity.org/2023/formulas/mathematics/high-school/5rymnx2o2blxllrmj4v60n6bu489jx9gte.png)
note:-
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)