If you can give me a solution and explanation, please help - I am unsure why I keep getting answer wrong

Problem 4 (10 pts). Suppose that the blood test for some disease is reliable in this sense: for people who are infected with the disease. the test produces a positive result in 99.99% of cases; for people not infected, a positive test result is obtained in only 0.02% of cases. Furthermore assume that in the general population, one person in 10,000 people is infected. A person is selected at random and found to test positive for the disease. What is the probability that the individual is actually infected