According to a police report there were [z] traffic accident…

According to a police report there were [z] traffic accidents last year in a certain town. Of these [z] accidents, [w] accidents involved speeding, [x] accidents involved alcohol, and [y] involved both risk factors. Denote by A the event that an accident involves alcohol and denote by SP the event that an accident involves speeding. Based on these numbers estimate the probability P(A and SP). Round your answer to 3 digits after the decimal point.