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d. Suppose the productivity of capital and labour are as shown in the accompanying table. The output in a perfectly competitive market for $1 0 per unit. Both capital and labor are hired under perfectly competitive conditions at $100 and $100, respectively. MPK 27 24 18 12 MPL 18 15 12 a. b. What is the least-cost combination of labour and capital the firm should employ in producing 81 units of output? Explain. What is the profit-maximizing combination of labor and capital the firm should use? Explain. What is the resulting level of OUtPUt? What is the economic profit?