An 18-slice pizza was made with only pepperoni and mushroom toppings, and every slice has at least one topping. Exactly ten slices have pepperoni, and exactly ten slices have mushrooms. How many slices have both pepperoni and mushrooms

Mathematics · High School · Tue Nov 03 2020

Answered on

Given :

Number of pizza slices = 18

Number of slices with pepperoni = 10

Number of slices with mushrooms = 10

Total = 20

Since, we had only 18 slices of pizza but here 20 toppings has either pepperoni or mushrooms topings which mean some slices has both pepperoni and mushrooms. 

So, Number of slices with both pepperoni and mushrooms = 20 - 18

= 2

 

Hence, 2 slices has both pepperoni and mushrooms