The windshield wipers on a car have not been working properly. The probability that the car needs a new motor is 0.5, the probability that the car needs a new switch is 0.35, and the probability that the car needs both is 0.2. What is the probability that the car needs neither a new motor nor a newswitch?

The probability that the car requires needs neither a new motor nor a new switch is: __________ (type in a decimal)