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as a marginal cost is the cost of the next product produced, if this is less than average cost, when you continue to produce more products the lower marginal cost will have an affect on the average and cause it to fall.
It would increase its average kinetic energy which would be apparent by an increase in temperature.
Fixed costs do not affect short-run marginal cost because they are just that- fixed. They are not dependent on quantity when it changes and does not vary directly with the level of output. Variable costs, however, do affect short-run marginal costs.
Marginal cost is the cost to the firm of producing one more unit of output - it is affected by the same factors that affect variable costs. A lump sum tax does not affect this relationship whereas a tax on the marginal unit produced will; such as an ad valorem tax. If a lump sum tax is imposed on a producer this will NOT affect his profit maximising decisions as his output decisions are always based on the margin. He will set MC = MR as per normal but will endure lower profits as the AC has increased. It is important to understand the distinction between marginal and average in this case and the consequences that marginal tax has on behaviour of the firm.
When marginal productivity is diminished, the cost of productions can decrease if the marginal costs for making an extra product is larger than the marginal revenue for that 1 extra unit product.
increase av speed and total dist. increases
a per unit tax directly affects the marginal cost schedule by increasing the value of each marginal cost at each value by the amount of the tax
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Marginal cost is the cost incurred in producing an additional unit of a product. It is the cost per unit of a product as against the total cost. It is therefore the variable cost of producing one more unit of a product.Average total cost is the total cost of production at an activity level. it is the total cost of divided by the total production.Whiles marginal cost shows the cost incurred in producing an additional unit of a product, average cost shows the total cost of production per unit.Just a small addition to this thought:Think of the marginal cost as being at a point in time, whereas the average total cost is calculated over a period of time. As a result, marginal cost at any given point may be higher or lower than an average total cost.Quick example:ABC manufactures a product they call Widget AWidget A sells for a price of $20ABC sells 1,000 units of Widget AFixed costs for this production run are $5,000, regardless of # of units soldVariable costs are $12 per unitGross Revenues $20,000Fixed Cost Expense $ 5,000Variable Cost Expense $12,000Gross Profit $ 3,000Breakeven # of units can be calculated as follows:20x = 5000 + 12x. Solving for x gives 625 units to break even. At this point the Average Transaction Cost equals the selling price of $20 per unit. As each additional unit is produced the ATC will decrease since the only additional cost is the variable cost of $12 per unit. Therefore, in this very simple example, the MARGINAL COST of producing each unit OVER 625 would be the $12 variable cost expense. In the example above, at 1,000 units the Average Transaction Cost is $17 ($5 per unit for Fixed and $12 per unit for Variable), which is a decrease from the $20 ATC at break even.
Contrast to what we would normally think, changes in fixed costs do not affect marginal cost. For example, if a product costs $10 to produce, and the fixed cost goes up to $25, then marginal cost stays the same.
This depends on what type of tax it is, lump sum or marginal.Lump sum: a lump sum consumption tax would not affect the general level or composition of consumption because fixed quantities do not affect optimal consumption-savings decisions.Marginal tax: if the marginal tax increased (i.e.) a general sales tax increase), it would decrease overall consumption because the tax would be an increase in the cost of consuming, and thus encourage the consumer to save more money and consume less.