Answer:
Let's denote:
probability that a person paid regular admission P(A)
probability that a person purchased no snack P(B)
probability that a person got discount on admission P(C)
probability that a person purchased snack P(D)
For picture 1
Applying Bayes theorem, we have:
probability that a person paid regular admission, given that person purchased no snack : P(A|B) = P(A ∩ B)/P(B) = (108/240)/(144/240) = 108/144 = 0.75
=> Option D is correct
For picture 2
As shown in picture, we have:
probability that a person got discount on admission and purchased snack:
P(C ∩ D) = 24/240 = 0.1
=> Option C is correct
Hope this helps!
:)