The probability that a person owns a car is 080 that a perso

The probability that a person owns a car is 0.80, that a person owns a boat is 0.30, and that a person owns both a car and a boat is 0.12. Find the probability that a person owns either a boat or a car, but not both.

P(person owns a boat or car , but not both) = P(person owns a boat only) + P(person owns a car only)

= (P(person owns a boat) - P(person owns both)) + (P(person owns a car) - P(person owns both))