my question

5. Members of a consulting company rent cars from three different rent-a-car services: 60% from Ist service, 30% from 2nd service and 10% from 3rd service. If 9% of the vehicles coming from the Ist service, 20% of the vehicles from the 2nd service and 6% of the vehicles from the 3rd service require maintenance, What is the probability that a vehicle rented to the company will require maintenance? b) What is the probability that the vehicle requiring maintenance has come from the 2nd service