Libby eats oatmeal, pancakes, or eggs, and she drinks apple juice or orange juice. If she picks a food and a drink at random, what is the probability that she will have oatmeal and apple juice?

A. 13
B. 15
C. 16
D. 18

1 answer

To determine the probability that Libby will have oatmeal and apple juice, we first need to identify the total number of food and drink options she has:

  1. Food options: Oatmeal, pancakes, eggs (3 options)
  2. Drink options: Apple juice, orange juice (2 options)

Next, we calculate the total number of possible combinations of food and drink:

\[ \text{Total combinations} = \text{Number of food options} \times \text{Number of drink options} = 3 \times 2 = 6 \]

The combinations can be listed as follows:

  1. Oatmeal and apple juice
  2. Oatmeal and orange juice
  3. Pancakes and apple juice
  4. Pancakes and orange juice
  5. Eggs and apple juice
  6. Eggs and orange juice

Now, we identify the favorable outcome, which is Libby having oatmeal and apple juice. There is only 1 favorable outcome (oatmeal and apple juice) in the 6 total combinations.

Now, we can calculate the probability:

\[ \text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} = \frac{1}{6} \]

The options given (A, B, C, D) seem to be numerical values rather than probability fractions, so it's likely there's a misunderstanding or the wrong context for these options.

However, the correct probability that Libby will have oatmeal and apple juice is \( \frac{1}{6} \), which does not match the options provided.

If the question is asking for a numeric representation based on a different scale (e.g., out of 18), we'd need that context to adjust the calculation accordingly. If you meant to ask about a scaled format, please clarify! As it stands, based purely on random selection of food and drink combinations, the answer is:

\[ \text{Probability of oatmeal and apple juice} = \frac{1}{6} \]