Is takes 1 1/2 cups of flour to make 12 cupcakes, how much flour do I need if I'm making 40 cupcakes?

Amount of flour ... Number of cupcakes

1 1/2 cups ... 12

X cups ... 40

Now cross multiply

12 X = 40 * 1 1/2

12 X = 60

X = 60/12

X = 5

Therefore, the no. of cups of floor needed = 5 cups of floor

First calculate how many cups do you need for only 1 cupcake by dividing number of cups for 12 cupcakes with 12 cupcakes

1 * 1/2 : 12 = 1/8 (that is how much you need for one cupcake)

Now multiply that number 1/8 with 40 and you'll get your result

1/8 * 40 = 5

you'll need 5 cups for 40 cupcakes.