Question

Tony’s Pizzeria customers were asked what kind of pizza topping they prefer. Tony learned that 20 customers selected pepperoni, 12 selected mushrooms, and 8 selected pepperoni and mushrooms. What is the probability that a randomly selected customer selected pepperoni but not mushrooms?

A.1/2
B.2/5
C.3/5
D.3/8

Answer 1

A. 1/2

Explanation:

First, find how many customers there were:

20 + 12 + 8

= 40

20 customers selected pepperoni only, so to find the probability that they chose pepperoni but not mushrooms, divide the amount by the total:

20/40

= 1/2

So, the probability is 1/2