Economics 2014 Jamb Examination

Stagflation refers to the economic condition where inflation occurs simultaneously with high unemployment.
It combines stagnant economic growth with rising prices, making it different from hyperinflation, demand-pull, or cost-push inflation which do not necessarily involve high unemployment.

Providing loans for investment is a major challenge due to issues like credit risk, poor regulatory frameworks, and low creditworthiness of borrowers.
Banks must balance profitability with risk management, making investment lending a persistent challenge in Nigeria.

Average cost (AC) is calculated as total cost (TC) divided by quantity (Q).
Total cost \(TC = FC + VC = 500 + 1500 = N2000\).
Average cost \(AC = TC / Q = 2000 / 50 = N40\).
Therefore, the average cost per unit is N40.

Fixed costs are expenses that do not change with the level of output.
Rent and administrative expenses remain constant regardless of production quantity, distinguishing them from variable costs, which fluctuate with output levels.

In perfect competition, firms maximise profit where marginal cost (MC) equals marginal revenue (MR).
Producing beyond this point would result in MC exceeding MR, reducing profit.
Therefore, output expansion continues up to the point where MC equals MR, ensuring profit maximisation.

A monopolist has market power, allowing control over both price and output levels.
Unlike firms in perfect competition, a monopolist can set price based on demand and adjust production to maximise profit, influencing both market price and quantity supplied.

A monopolist maximises revenue by strategically reducing output, which increases scarcity and allows a higher selling price.
By decreasing total output to match price with demand, total revenue rises.
Simple price increases without output adjustment may reduce sales volume and revenue.

The supply function is given by \(P = \dfrac{1}{4}(Qs+10)\).
Substituting \(P = 10\), we have \(10 = \dfrac{1}{4}(Qs + 10)\).
Multiplying both sides by 4: \(40 = Qs + 10\).
Solving for Qs: \(Qs = 30\).

If price is below equilibrium, the quantity demanded exceeds quantity supplied, creating a shortage.
This shortage puts upward pressure on price as buyers compete for limited goods.
Therefore, the market mechanism pushes price upwards, not downwards, until equilibrium is restored.

The price mechanism is the process by which the interaction of supply and demand in the market determines prices.
Market forces of demand and supply automatically adjust prices to clear the market.
It operates independently of government legislation or auctions, although these can influence prices in specific contexts.