Algebraic method for EOQ Models with Temporary Sale Price

Recently, in order to introduce economic decision analysis to those younger students in school without the sophisticated knowledge of calculus, there have been more and more researchers devoting themselves to solving EOQ and EPQ models without derivatives. Wee et al. (2003) proposed an EOQ model with temporary sale price derived without using calculus. They used the standard method to complete the square to find the maximum point and maximum value for a quadratic function. We treat the same problem to avoid their lengthy computation and provide an efficient and succinct solution. Hence, the reader can absorb the knowledge of the inventory model clearer and easier.