The best way to go about solving this is to turn it into an equation. We're trying to find the number of roses when there are 14 carnations. And there are 8 carnations for every 4 roses. Which can be simplified into the ratio 8:4, and when we find the common denominator, we can change the ratio to 2:1. So for every 2 carnations, there is one rose. Now we put together the equation, x will be the number of roses, 2x=14. Then divide each side by 2, x=7, there are 7 roses in the arrangement. Sorry if this is a little difficult to follow, hope it helps