We have been using the same set of data (Data Set One) in the notes to illustrate production and costs.  I have provided Data Set One in both tables below.  When costs were calculated in the notes, fixed costs were \$200.  By using the term fixed costs economists are only referring to the fact that a firm must pay this expense no matter how much output it produces or sells.  An example of a fixed cost could be the rent a small store pays on the space it rents.  The rent will be the same for the duration of the lease, no matter if the store sells I item or 500 items.  It is helpful to know what will happen to costs if the price of the variable or fixed resource changes.

PROBLEM ONE – Using the information in data set one, which I have included in the table below, recalculate total cost, fixed cost, variable cost, marginal cost, average total cost, average variable cost and average fixed costs if the price of the fixed input (the small stores rent) is not \$200 but \$220.  A new lease may have caused the rent to increase.  I have created Table 1 for you to put your answers in.  Assume the price of the variable input, labor, is still \$50 per unit.  When fixed costs change which other costs will increase?  Compare the costs you calculate for table one to the costs calculated in the notes in chapter 7 to find the answer.

TABLE ONE FOR ANSWERS TO PROBLEM ONE

 Units of Labor Total Product (output) FC VC TC MC ATC AVC AFC 0 0 1 3 2 7 3 12 4 16 5 19 6 21

Problem Two – Using the information in data set one, which I have included in the table below, recalculate total cost, fixed cost, variable cost, marginal cost, average total cost, average variable cost and average fixed costs if the price of the variable input (which is labor in this example) is not \$50 but \$55.   I have created Table 2 for you to put your answers in.  Assume that fixed costs remain at \$220.  When the price of a variable input changes which other costs will increase?  Compare the costs you calculate for table two to the costs calculated in table one to find your answers.

TABLE TWO FOR ANSWERS TO PROBLEM TWO

 Units of Labor Total Product (output) FC VC TC MC ATC AVC AFC 0 0 1 3 2 7 3 12 4 16 5 19 6 21

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