On a normal eight-hour production shift you should be producing 200 pieces in one hour, but you are actually producing 100 pieces per hour. Assuming that the current efficiency is 50% and quality is 93%, calculate the availability if you have 80 min of micro-stops, 60 min of design change, 70 min of stoppages for damage to equipment and adjustments and 30 min of food for operators. (put the answer in%)