Question

A bag contains 25 cookies. There are 15 chocolate chip cookies, 7 peanut butter cookies, and the rest are oatmeal raisin cookies. What is the probability of randomly choosing a chocolate chip or peanut butter cookie from the bag? (Write your answer as a whole percent)

Answer 1

Case: Probability

Method:

Total= 25 cookies

Chocolate chip (C)= 15

Peanut butter (P)= 7

Oatmeal raisin (O)= 25 - 15 - 7

Oatmeal raisin= 3

The probability of randomly choosing a chocolate chip or peanut butter cookie from the bag.

`\begin{gathered} Pr(CorP)=(15+7)/(25) \\ Pr(CorP)=(22)/(25) \end{gathered}`

As a percentage, the percentage equivalence is:

`\begin{gathered} Pr(CorP)=(22)/(25)*100 \\ Pr(CorP)=22*4 \\ Pr(CorP)=88 \end{gathered}`

Final answer:

88%