Question

In: Operations Management

The Metropolitan Bus Company (MBC) purchases diesel fuel from American Petroleum Supply. In addition to the...

The Metropolitan Bus Company (MBC) purchases diesel fuel from American Petroleum Supply. In addition to the fuel cost, American Petroleum Supply charges MBC $300 per order to cover the expenses of delivering and transferring the fuel to MBC's storage tanks. The lead time for a new shipment from American Petroleum is 10 days; the cost of holding a gallon of fuel in the storage tanks is $0.06 per month, or $0.72 per year; and annual fuel usage is 120,000 gallons. MBC buses operate 300 days a year.

  1. What is the optimal order quantity for MBC?

    Q* =
  2. How frequently should MBC order to replenish the gasoline supply?

    __________ orders per year
  3. The MBC storage tanks have a capacity of 15,000 gallons. Should MBC consider expending the capacity of its storage tanks?

    Metropolitan Bus Company (Needs to expand / does not need to expand) the capacity of its storage tanks.
  4. What is the reorder point?

    r = ______ gallons

Solutions

Expert Solution

Given: Annual Demand = D = 120,000 gallons

Ordering cost = S = $300

Lead time = LT = 10 days

Annual Holding cost = H = $0.72

No. of working days = N = 300 days

a) Optimal Order quantity = EOQ = = = 10,000 gallons

b) No. of orders per year = D / EOQ = 120,000 / 10,000 = 12 orders per year

c) Demand during lead time = Daily demand * Lead time = (D / N) * LT = (120,000 / 300 ) * 10 = 4000 gallons

Total storage required = EOQ + Demand during lead time = 10000 + 4000 = 14000 gallons

Since capacity = 15000 gallons > 14000 gallons, Metropolitan Bus Company does not need to expand the capacity of its storage tanks.

d) Reorder point = Demand during lead time + safety stock = 4000 + 0 = 4000 gallons

_______________________________________________________________________________________

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