An office manager is deciding on a paper shredder to be purchased for her legal firm. Three suppliers have provided information about their shredders, including MTBF and MTTR for the models under evaluation. Use the information shown in the table to calculate the system availability for each supplier€™s shredder.

Which supplier should the office manager select if she chooses the supplier with the best system availability?

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Supplier A Supplier B 100 Supplier C 80 MTBF (hours) MTTR (hours) 75