pineapple or orange juice
To get the probability you first have to find out what the total possible outcomes are, and to get that you have to add up all the cans of juice in this question. The total possible outcomes is the denominator. Then you put the number of cans of juice that they ask you ( for example apple juice ) and put the number of cans of apple juice as the numerator. After that you get the percent by dividing the numerator by the denominator and multiplying the answer by 100. When it saids Pineapple or Orange Juice you don't do it seperatly, you combine them.
TPO = Total Possible Outcomes