Cost of underage, Cu = Opportunity cost of earning no profit =
5.00
Cost of overage, Co = Loss of discarding = 1.20
So, the optimum in-stock probability = Cu / (Co + Cu) = 5 /
(1.2+5) = 0.8065
Optimal order size, Q = 2000 + (3000 - 2000)*0.8065 = 2,806 kgs
On obving this quadratic equation, we get - 17.4 kg UIL.CO should be procured everyday. Example...