we are given the probability of A and B and the conditional probability B/A. We can use the following formula to determine the probability of A:
![P(A\wedge B)=P(A)* P((B)/(A))](https://img.qammunity.org/2023/formulas/mathematics/high-school/fqnuvijy0kq54fv6zzez0x7je6guy4yzm3.png)
Solving for the probability of A:
![P(A)=(P(A\wedge B))/(P((B)/(A)))](https://img.qammunity.org/2023/formulas/mathematics/high-school/rudc099va7iscq5ko61b65t3h5jm0lemyc.png)
Replacing the known values:
![P(A)=((33)/(100))/((3)/(5))](https://img.qammunity.org/2023/formulas/mathematics/high-school/qsgx2a8bs2qnx7beg24k2fipn2jm66ees1.png)
Solving the operations:
![P(A)=0.55](https://img.qammunity.org/2023/formulas/mathematics/high-school/4ypy07dc2hzkh0hirl32ydlk997umf1c0c.png)
Therefore the probability of A is 55%