Example

Effect of Doubling Input Prices on the Cost of Technology B

A proportional increase in all input prices does not alter a firm's choice of the least-cost technology because the relative price ratio remains constant. For example, if the wage (w) doubles from £10 to £20 and the price of coal (p) doubles from £20 to £40, the slope of the isocost line (-w/p) is unchanged. While Technology B remains the optimal choice, its total production cost will double, increasing to £160.

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Updated 2026-05-02

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