how do I Write an equation for the proportional relationship for the question about apples and pizza proportionality???

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

W-16=-12 solve each one step equation plz

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct