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The following production information for the Murray Manufacturing Company has be

ID: 2437570 • Letter: T

Question

The following production information for the Murray Manufacturing Company has been gathered for part number AB7 (which is used in the manufacture of one of its products):

Murray Manufacturing buys part AB7 from a supplier.

Murray estimates that it will need 5,400 parts this month (which has 30 days).

Each part costs $6.89, and it costs Murray $750 to place an order for part AB7.

It takes 8 days to receive an order of part AB7 from Murray's supplier.

All parts orders are received, inspected, and checked into inventory the same day shipment is received.

Inventory carrying costs are 20% of the inventory value for the month.

Required:

A. Compute the economic order quantity in units (rounded to the nearest unit) for part AB7.

B. Compute the reorder point (rounded to the nearest unit) for part number AB7

Explanation / Answer

A) Economic Order Quantity= Square root of {(2*Annual Demand*Order Cost/order)/Carrying Cost per unit}

A=Annual Demand=5400/month* 12 months=64800 units

B= Ordering Cost/order= $ 750/order

C= 20%(Cost of part)=0.2($ 6.89)= $1.378/unit

EOQ=Square root of{(2*64800*750)/1.378}=8399 units

B) Reorder Point: Since the usage is entirely constant and lead time is known with certainty the order point=Daily usage* Lead time

Reorder Point=180 units/day*8 days=1440 units