A small independent physicians’ practice has three doctors. Dr. Khan sees 41% of the patients, Dr. Chan sees 32%, and Dr. Jackson sees the rest. Dr. Khan requests blood tests on 5% of her patients, Dr. Chan requests blood tests on 8% of his patients, and Dr. Jackson requests blood tests on 6% of her patients. An auditor randomly selects a patient from the past week and discovers that the patient had a blood test as a result of the physician visit. Knowing this information, what is the probability that the patient saw Dr. Khan? For what percentage of all patients at this practice are blood tests requested?