今天Amber老師給大家講一下MA考試中的兩種關(guān)于EOQ的常考易錯(cuò)題型~ 同學(xué)們大家好,今天Amber老師給大家講一下MA考試中的兩種關(guān)于EOQ的??家族e(cuò)題型,也就是EOQ與bulk discount結(jié)合的題目和公式中元素變化時(shí)EOQ和總成本如何變化。這兩種題型深入考察了我們對(duì)知識(shí)點(diǎn)的理解,要做正確就需要對(duì)EOQ的本質(zhì)和假設(shè)都有很好的理解。掌握這個(gè)易錯(cuò)點(diǎn),對(duì)樹(shù)立考前信心非常重要。所以今天老師通過(guò)講題的方式,跟大家講解一下考試中,這類(lèi)題易錯(cuò)點(diǎn)在哪兒,以及遇到類(lèi)似的問(wèn)題怎么處理。
  
  請(qǐng)大家先做題后點(diǎn)擊下方鏈接,收聽(tīng)老師語(yǔ)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(lái)源:精選題目
  
  解析:EOQ=根號(hào)下2CoD/Ch = 根號(hào)下2*32*150*12/(25*18%)=160unit>150, 1% discount applied; Recalculate=根號(hào)下2*32*150*12/(25*99%*18%)約等于161
  
  考察知識(shí)點(diǎn):EOQ與bulk discount結(jié)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(lái)源:精選題目
  
  解析:過(guò)去一次訂購(gòu)300. 現(xiàn)在接受打折,說(shuō)明訂購(gòu)量超過(guò)500unit。annual ordering cost=Co*D/Q,因?yàn)橛嗀浟吭黾?,所以訂貨次?shù)D/Q減小,annually ordering cost減少;Q增加,annual holding cost=Ch*Q/2,平均庫(kù)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(lái)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(dǎo)致average inventory=EOQ/2增加,所以holding cost=Ch*average inventory就增加。
    考察知識(shí)點(diǎn):EOQ公式,total holding cost公式