Rodney's Repair Service has a lug nut tightening machine that works well 88% of the time. They got a new machine that works well 96% of the time. Each machine is used 50% of the time. Use Bayes' Theorem to find the probability. If necessary, round your calculations to the nearest thousandths, and write your answer as a percent. The old machine malfunctioned.

The old machine will malfunction
% of the time.