jerry uses 3.5 cups of rice to make 5 servings. He needs to make 32 servings. If rice is sold in 4 cup boxes, how many boxes will he need to buy?

I think he will have to buy 5.6 or 6 boxes

Because i did: 3.5:5 to get cups per serving which is. 7 then i did. 7*32 to get the amount of cups for 32 servings which is 22.4 then i did 22.4:4 to get 5.6 which is the amount of boxes to buy.

I think the answer is 5.6 or 6 unless you have to round or something or you have multiple choice then that is my answer.