8 Classic order quantity model (points 4] The manager of the local coal-fired power plant remembers the last storm and that he should make better energy supply plans. In order to be able to plan the amount of coal more precisely, he uses the EOQ model. It requires an annual average of 170 kg of coal per week. The energy supply should remain constant throughout the year. Expect a production time of 52 weeks per year. For each order, the operator has to reckon with order-fixed costs of 7 for transport and 51 for customs duties. The specified demand is continuous. The storage cost rate per kg and year results from the opportunity costs of the stored materials amounting to 20% of the value of the materials of 159 per kg. Calculate the optimal order quantity. [1 point] Optimal order quantity: How high are the annual fixed ordering costs and the storage costs? [2 points] Order cost: storage costs Enter the cycle time t in years. [1 point] Cycle time T