acme inc produces specialized instrument for specific use. the production rate is 789 units per day. annual demand for the instrument is 77,941 units per year. the setup cost for the production run is $723, and the variable cost is $72.18 per unit. acme inc interest rate is 21.08% per year. assume that there are 335 working days per year. what is the proportion of uptime, t1, in days for this specialized instrument?