今天Amber老師給大家講一下MA考試中的兩種關于EOQ的??家族e題型~ 同學們大家好,今天Amber老師給大家講一下MA考試中的兩種關于EOQ的??家族e題型,也就是EOQ與bulk discount結合的題目和公式中元素變化時EOQ和總成本如何變化。這兩種題型深入考察了我們對知識點的理解,要做正確就需要對EOQ的本質和假設都有很好的理解。掌握這個易錯點,對樹立考前信心非常重要。所以今天老師通過講題的方式,跟大家講解一下考試中,這類題易錯點在哪兒,以及遇到類似的問題怎么處理。
  
  請大家先做題后點擊下方鏈接,收聽老師語音講解。
  
  第一題
  
  Demand: 150 units per month; price per unit: $25;order cost:32; holding cost: 18% p.a. of price.
  
  Following discounts apply:
  
  Discount of 1% given on orders of 150 and over; Discount of 2% given on orders of 300 and over; Discount of 4% given on orders of 800 and over
  
  Question: the minimum total cost are?
  
  題目來源:精選題目
  
  解析:EOQ=根號下2CoD/Ch = 根號下2*32*150*12/(25*18%)=160unit>150, 1% discount applied; Recalculate=根號下2*32*150*12/(25*99%*18%)約等于161
  
  考察知識點:EOQ與bulk discount結合求最低total cost。
    第二題
  
  A supplier offer a 3% discount to the order over the 500 unit; The C company is past reordering quantity is EOQ 300 units.
  
  If the bulk discount on the purchase price accepted, other variable remain unchanged。what would be the effect on the annual ordering costs and annual holding cost?
  
  A increase; decrease
  
  B increase; increase
  
  C decrease; increase
  
  D decrease; decrease
  
  題目來源:精選題目
  
  解析:過去一次訂購300. 現在接受打折,說明訂購量超過500unit。annual ordering cost=Co*D/Q,因為訂貨量增加,所以訂貨次數D/Q減小,annually ordering cost減少;Q增加,annual holding cost=Ch*Q/2,平均庫存Q/2增加,所以annual holding cost增加。
  
  第三題
  
  What the effect on EOQ and the total annual holding cost of an increase in the cost of the ordering a batch of raw material(other variables remain unchanged)?
  
  A  higher;lower
  
  B  higher;higher
  
  C  lower;higher
  
  D  lower;lower
  
  題目來源:精選題目
  
  解析:Co增加,EOQ公式分母增加,其他不變所以EOQ增加;EOQ增加導致average inventory=EOQ/2增加,所以holding cost=Ch*average inventory就增加。
    考察知識點:EOQ公式,total holding cost公式