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BUSINESS ECONOMICSClass 8
8 December, 2009
Recap
Capital Budgeting NPV, Internal Rate of Return Profitability Index, Payback period
Cost Curves Marginal Cost Curve Average Cost Curve Fixed and Variable Costs Short-run and Long-run Costs
Cost Curve
MC curve is above average cost or average variable cost curves, then curves are rising.
If MC is below average cost curve or average variable cost curve, then curves are falling.
If MC equals average cost, then average cost is at its minimum value.
If MC equals average variable cost, then average variable cost is at its minimum value.
Price Controls
Price controls are governmental impositions on the prices charged for goods and services in a free market.
Purpose of controls To maintain the affordability of staple
foods and goods To prevent price gouging during shortages To ensure an income for providers of
certain goods.
Price Controls
There are two primary forms of price control Price ceiling - the maximum price that can
be charged Price floor - the minimum price that can be
charged Techniques of price controls
As part of a larger income policy package Wage controls Other regulations
Price Controls
Criticism Prices kept artificially low Demand is increased to the point where supply can not keep up Shortages in the price-controlled product. Shortages lead to black markets where prices for the same good
exceed those of an uncontrolled market. Once controls are removed, prices will immediately be subject to
rampant inflation, which can temporarily shock the economic system.
Example of how price controls cause shortages Arab oil embargo between October 19, 1973 and March 17, 1974.
Long lines of cars and trucks quickly appeared at retail gas stations in the U.S. and some stations closed because of a shortage of fuel.
The fixed price was below what the market would otherwise bear and, as a result, the inventory disappeared.
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