Range for marginal cost = $20 to $50
Since at the price of $60 total Marginal revenue on demand curve two = $20
Total Marginal revenue on demand curve on =$50
Hence $60 for the product is optimum for the range of marginal cost from $20 to $ 50.
Since the optimum level of price is where marginal cost is equal to marginal revenue.
The marginal cost of production includes all costs that vary with that level of production. For example, if a company needs to build an entirely new factory to produce more goods, the cost of building the factory is the marginal cost.
Marginal Cost = Change in Total Cost / Change in Quantity. Change in Total Cost = Total Cost of Manufacturing Including Additional Units – Total Cost of Manufacturing Regular Units. Quantity Change = Full Quantity Product with Additional Units - Full Quantity Product in Regular Units.
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