Problem:Part failure

Suppose that a quality authority screens a sample of parts for a certain type of defect. It is known that 5% of the sample has this defect. The screening test to be used will detect the failure, if the part is defective, 98% of the time and will produce a spurious result (i.e. detect the failure if the part is not defective) 2% of the time. What is the probability of a part that gives a positive result actually having the defect?

[Calculate: P(defect|detect)]