A cook wants to increase a recipe for Quaker Quick Grits that serves 4 to make enough for 10 people. The recipe calls for 3 cups of water. How much water will be needed to serve 10?

10/4 = 2.5

if normal recipe was 3 cups of water multiply by 2.5

2.5 x 3 = 7 1/2 cups of water to make the grits for 10 people.