A factory has three machines, A, B, and C, for producing items. Machine A makes 60% of all the widgets, and machine B makes the
rest. 3% of machine A’s widgets are defective, and 8% of machine B’s widgets are defective. One of the factory’s widgets is found to be defective; what is the probability that it was made by machine?
Try A, $5000. I did 550 divided by 11, which is 50, then multiplied by 10 to find 10%, then multiplied the 10%, which was 500, by 10 to get 100% which is 5,000