POPULATETHE EQUATIONWITH FRACTIONS!

A patientis beingtested for a rarebutterrible disease that is virtually 100% fatal. He is told that the test is right 99% of the time. That is to say, for those who havethe disease, the test indicates "positive" at a rate of 99%, and for those who do not, the test indicates "negative" at a rate of 99%. The patient ends up testing "positive" for the disease and is terrified. Thing is, the disease is rare: in the general population of the place where the patient lives, one in 10,000 people has it. Now, employ Bayes's Rule to figure out the probability that the patient has received a "false 'positive'". Let's assign variables thusly(you may not need to use all the variables): D = A person has the disease. P = A person has tested positive. N = A person has tested negative.

Now, what would the equation look like?