The Daily Star: Durability of concrete structures: A key concern for sustainable construction

A local newspaper recently reported a comparison chart showing the durability of concrete in advanced nations. Some 15-year-old tabulation (rounded number in years of lifespan) shows: Korean concrete ...

− − ⩾ In other words, the sign of the change in the maximizing x is the same as the sign of the change in p. If replaces in (1), then the sign of the change in x is the opposite of the sign of the change in ⩽ ⩾ p. For minimization rather than maximization the sign of the efect is reversed. Proof : By definition of maximization, we have

q = 196 = 49. profit-maximizing level of production i 1 If mπ = mr – mc = 0, then mr = mc. This is known as the first-order condition for a profit maximum. Second, find the firm’s profit-maximizing price p by substituting q* = 49 into the inverse demand function (Equation 4): = 200 49 = 200 − 98

All firms are maximizing profits. No firm has incentive to enter or exit, because all firms are earning zero economic profit. Note that economic profits include opportunity costs Thus, zero economic profit includes the value of your next best option -- what would you be earning if you weren't in your current business? Price is such that QS = QD.

Profit-Maximizing Output Level (if output should be produced at all), rule for finding MR = MC