How many orders will be required to be placed per year to procure the filters? Inventory costs 1% p.m. Other costs including warehousing, obsolescence, mishandling can be assumed to be 50% of the finance cost. Cost of each order is estimated at Rs.3000. Paint shop consumed 50 filters p.m. last year. However, to achieve a high quality output shop has decided to change the filters more frequently and will now require 60 filters p.m. Cost of each filter is Rs.10000