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SPC buys polystyrene resin from a supplier in 1000-pound units, and each unit co

ID: 351176 • Letter: S

Question

SPC buys polystyrene resin from a supplier in 1000-pound units, and each unit cost $20.00, and the percent holding cost is 15%. The fixed shipping cost per order is $300.If we assume that 1000 pounds of resin yields 1000 pounds of clear plastic, what are the following values for clear plastic?

Find:

A. Cycle Inventory

B. Holding Cost

C. Flow Time

Data:

- 1000-pound units

- $20.00 Cost per Unit

- 15%: Holding cost per year

- $300 Shipping cost

- Annual Demand:

- Black Plastic: 23,967

- Clear Plastic: 29,760

Explanation / Answer

d= 1000 pound units

Here demand D for clear Plastic= 29,760

Set up cost S= $300

Holding cost per year H= 15%

Unit cost C = $20.00

Optimal lot size Q* = SQRT((2DS)/H)

A. Cycle Inventory = Q/2

Q= SQRT((2DS)/H)= SQRT( (2*29760*300)/20*0.15)= 2439.67

Cycle Inventory= Q/2 = 1219.83

B. Holding cost

= (Q/2)*% Holding cost * C =. 1219.83 * 0.15*20 = 3659.49

C. Flow Time

= Q/2d = 2439.67/ 2*1000 = 1.21 month