Question

In: Operations Management

With a fixed cost of $100 per order, Nathan decided it was vital to get his...

With a fixed cost of $100 per order, Nathan decided it was vital to get his money's worth. His monthly demand for energy drinks was 10,000 bottles and holding cost was estimated at 20% of unit cost. The mail-order company offered him a couple of possibilities — he could pay $4.00 per bottle for orders of up to 10,000 bottles. After that threshold, he would pay only $3.98 per bottle, and if he ordered 20,000 or more bottles in a order, he would pay only $3.96 per bottle.

A. What is the best order quantity for Nathan to use?

B. What is the best total cost that Nathan can incur?

Solutions

Expert Solution

a) Best order quantity = 10000 (See table below) (Lowest cost)

b) Quantity of 10000 has the lowest cost of = Holding cost + order cost + product cost = (10000/2) *0.796+(120000/10000)*100+(120000*3.98) = $482780

Annual demand, D = Months * Monthly demand = 120000
Order cost, S 100
Quantity 1 to 10000 10000 to below 20000 20000 or more
Cost, C 4.00 3.98 3.96
Holding cost, H = 20% 0.80 0.796 0.792
EOQ = sqrt(2DS/H), 5477.23 5490.97 5504.82
Considered Order quantity - Q for calculation 5477.00 10000.00 20000
Considered Q = 5477 as EOQ is within range Consider Q = 10000, for discount Consider Q = 20000, for discount
Order size 1 to 10000 10000 to below 20000 20000 or more
Product cost = D (120000) * Respective cost for order quantity 480000.00 477600.00 475200.00
Holding cost = (Q/2) * Holding cost 2190.80 3980.00 7920.00
Ordering cost = (D/EOQ) * S 2190.98 1200.00 600.00
Total cost 484381.78 482780.00 483720.00

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