The manager of the local bakery decides to calculate the Operating Equipment Effectiveness (OEE) of one of the machines in the bread making process. She gathers the following data from one shift. Available operating time: 7 hours. 90 minutes was lost due to a breakdown and the machine was idling for 30 minutes due to operator error. One per cent of the production did not pass final quality checks. What was the OEE for the machine? 84.7% 78.6% 61.6% 70.7%