A) TC = Total fixed cost + Total variable cost
Variable cost is 3Q per unit. Therefore, TVC = 3Q²
Or, TC = 120 + 3Q²
AC = (TC/Q) = (120/Q) + 3Q
MC = d(TC)/dQ = 6Q
B) when AC is minimized, d(AC)/dQ = 0
Or, -(120/Q²) + 3 = 0
Or, 120/Q² = 3
Or, Q² = 40
Or, Q = √40
Assume that fixed costs are 120 and the variable costs are 3Q per unit. a) Write...
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