NDA Math Probability

Let E1,E2,E3 and A be events defined as follows.
E1 = person chosen is a scooter driver
E2= person chosen is a car driver.
E3 = person chosen is a truck driver &
A = person meets with an accident
∵Probability that a person meets with an accident given that he is a scooter driver=P(

A

E1

)=0.01
P(

A

E2

)=0.03&P(

A

E3

)=0.15
∵ the person meets with an accident,
∴ the probability that he was a scooter driver