Girl A and boy B agree to meet in Kampi. The girl lives in Vantaa and the boy lives in Espoo. They depart simultaneously from their home stops, and it is assumed that the departure times of the buses they use are independent. The girl's Travel time from Vantaa to Kamppi follows an approximately normal distribution with parameters 35 (expected value) and 16 (variance), and the boy's corresponding parameters are 30 and 9.

a) What is the probability that a girl has to wait for a boy in Kamppi?