The figure below shows a family of cost curves for a firm. The subscripts 1, 2, and 3 for the SRATC curves refer to different plant sizes.
FIGURE 8-2
Refer to Figure 8-2. What is the difference between the SRATC curves and the LRAC curve?
◦ The SRATC curves show the lowest attainable cost of production at each level of output when all factors are variable in the short run, whereas the LRAC curve shows the same in the long run.
◦ The SRATC curves show the optimal plant size when all factors of production are variable, whereas the LRAC shows the lowest cost attainable associated with each LRAC curve.
◦ The LRAC is an envelope curve, joining the minimum points on all SRATC curves.
◦ For the SRATC curves, one or more of the factors of production is fixed, whereas for the LRAC curve, all factors of production are variable.
◦ The SRATC curves show diseconomies of scales, whereas the LRAC curve shows economies of scale.
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Ugonachomma display figure, Igbo, Nigeria.
Typical Startup Cost Categories Cont.
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