model discusses the restore of perfect items instead of defective ones by using the repair
option under two cases. The first case assumes that all the defective products are mended
by a repair shop at some cost while the second case considers that some fraction of flawed
items that are not able to mend are kept for sale for the cheaper cost. The proportion of
improper items in every collection is considered as a Pentagonal Fuzzy Number [PFN]. A …