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1. Determine a maintenance priority by calculating Preventive Maintenance Factors (PMFs) for the three pieces of equipment listed in the table below. Clearly state which piece of equipment has the highest maintenance priority. [7] Assumptions Dragline Backhoe Front Shovel Expected no. of breakdowns per year (C) 4 3 2 Cost of repairs caused by breakdown (A) $300 $200 $270 Cost of repairs to the other equipment damaged by the breakdown $0 $200 $100 (B) Number of planned preventive maintenance activities (D) 12 4 12 Average Cost of Preventive Maintenance Activities (E) $250 $150 $150