Sally bakes 80 cupcakes for a bake sale. she sold 4 cupcakes and earned $8. how much money can she earn if she sells all the cupcakes.

4/8 = 1/5 = .50

That means each cupcake equals $0.50.

Now, multiply

80 * .5 = 40

Sally would earn $40 if she sells all the cupcakes

TO find out how much she would earn for 80 cupcakes we will find the unit rate for the amount she sold and how much she earned. Lets do it:-

8/4 = .50

$0.50 per cupcake

0.50 * 80 = 40

So if she sells 80 cupcakes she will earn $40. 

Hope I helped ya!!! xD