A New York City Auto Parts store sells tires made by one of two brands. Customers can also purchase extended warranties for the tires. If the probability that the customer purchase brand 1 is 0.7, the probability that the customer purchase brand 2 is 0.3, The probability that the customer purchase the extended warranty given they purchased brad 1 is 0.2, and the probability that the customer purchase the extended warranty given they purchased brad 2 is 0.4. If a tires customer is selected at random, what is the probability that they purchased the extended warranty