Suppose a firm produces paper planes using one variable factor, labour and one fixed factor, capital. Labour can be hired at a cost of $50 per hour. Complete Table 2 calculating Marginal Product (MP) of each additional worker hour, the Total Variable Cost (TVC) and Marginal Cost (MC). TABLE 2 – Paper plans per hour worker hrs: 1, 2, 3, 4, 5, 6 Output/hr:100, 210, 330, 430, 510, 560 TVC: 50, 100, 150, 200, 250, 300 MP: ? MC: ? a) How did you calculate TVC? b) Discuss the relationship between marginal cost and marginal product.
Question
Suppose a firm produces paper planes using one variable factor, labour and one fixed factor, capital. Labour can be hired at a cost of $50 per hour. Complete Table 2 calculating Marginal Product (MP) of each additional worker hour, the Total Variable Cost (TVC) and Marginal Cost (MC). TABLE 2 – Paper plans per hour worker hrs: 1, 2, 3, 4, 5, 6 Output/hr:100, 210, 330, 430, 510, 560 TVC: 50, 100, 150, 200, 250, 300 MP: ? MC: ? a) How did you calculate TVC? b) Discuss the relationship between marginal cost and marginal product.
Solution
a) The Total Variable Cost (TVC) is calculated by multiplying the cost of labor per hour (50 (150), for 2 worker hours, the TVC is $100 (250), and so on.
b) The Marginal Product (MP) is calculated by finding the difference in output per additional worker hour. For example, the MP from the first to the second worker hour is 110 (210-100), from the second to the third worker hour is 120 (330-210), and so on.
c) The Marginal Cost (MC) is calculated by dividing the change in Total Variable Cost (TVC) by the change in output. Since the TVC increases by 50/110, for the third worker hour, the MC is $50/120, and so on.
d) The relationship between marginal cost and marginal product is that as the marginal product increases, the marginal cost decreases, and vice versa. This is because the marginal product is the additional output produced by an additional unit of input (in this case, labor), while the marginal cost is the additional cost incurred to produce that additional output. Therefore, if more output can be produced with the same amount of input (i.e., the marginal product increases), then the cost of producing each unit of output (i.e., the marginal cost) decreases. Conversely, if less output can be produced with the same amount of input (i.e., the marginal product decreases), then the cost of producing each unit of output (i.e., the marginal cost) increases.
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