A survey of a magazine's subscribers indicates that 50 own a ...

[debasdf]

A survey of a magazine's subscribers indicates that 50 own a house, 80 own a car, and 90 of the homeowners also own a car. What proportion of subscribers:
 a. own both a car and a house?
  b. own a car or a house, or both?
  c. own neither a car nor a house?

Question 2

Suppose P(A) = 0.50, P(B) = 0.40, and P(BA) = 0.30.
 a. Find P(A and B).
  b. Find P(A or B).
  c. Find P(AB).

[Chou]

Answer to Question 1

a. 0.45
b. 0.85
c. 0.15

Answer to Question 2

a. 0.15
b. 0.75
c. 0.375