From the definition of conditional probability,

and by the law of total probability,

In other words, each cell in the grid left of and above the total column and row represents the joint probabilities (e.g.

). So,
1 and a half gallons is 24 one cup servings
1 gallon=16 cups
1/2gallon=8cups
8+16=24
The correct answer is B)
I hope this helps.
Have a "AWESOME" day! :)
Answer:
A
Step-by-step explanation:
B and D have to be supplementary otherwise it wouldn't be a parallelogram