An outward shift of the production possibilities frontier (PPF) represents economic growth, which requires an increase in productive capacity. A reduction in unemployment simply moves the economy from a point inside the PPF toward the frontier, representing a more efficient use of existing resources rather than an expansion of total capacity.

In an autarkic state, the economy cannot engage in international trade, meaning that consumption is strictly limited to what is produced domestically. To maximize welfare, the economy must produce at the most efficient level, which is on the production possibility frontier. Consequently, the consumption point must also coincide with this production point on the frontier, as the economy cannot consume more than it produces.

This problem involves sunk costs and marginal analysis. The Rs 1000 already spent is a sunk cost and should be ignored. The decision to complete the stand depends on whether the additional (marginal) revenue of Rs 800 exceeds the additional (marginal) cost of Rs 300. Therefore, one should complete the project as long as the marginal cost is less than the expected marginal revenue of Rs 800.

Opportunity cost is defined as the value of the next best alternative that must be given up to obtain something else. In this scenario, the economy chooses to produce more of good B, and the cost of this decision is the loss of 3 units of good A. This trade-off illustrates the fundamental economic principle that resources are scarce and choosing one option necessitates sacrificing another.

Opportunity cost is a foundational concept representing the value of the best alternative foregone when a decision is made. Because resources are scarce, choosing to use them for one purpose means they cannot be used for another; the value of that lost opportunity is the cost of the choice.

Opportunity cost is defined as the value of the next best alternative foregone. In this scenario, the economy faces a trade-off between 10 units of A and 4 units of B. To find the cost of one unit of B, we divide the total units of A by the total units of B (10/4), which equals 2.5. Therefore, producing one unit of B requires sacrificing 2.5 units of A.

Productive efficiency occurs when an economy is operating on its production possibility frontier. At this point, it is impossible to increase the production of one good without decreasing the production of another because all available resources are being utilized to their maximum potential. This trade-off is a direct consequence of scarcity and the necessity of allocating limited resources efficiently across competing production possibilities.

The fundamental economic problem arises because human wants are unlimited while resources are finite. Having infinite resources is not a viable solution because it is physically and economically impossible; scarcity is an inherent condition of the world. Economic systems like market, command, or mixed economies are designed to manage the allocation of these limited resources, not to eliminate the reality of scarcity itself.

Opportunity cost is defined as the value of the next best alternative foregone. For a student, the most significant cost of education is not just the explicit tuition, but the income they could have earned if they had entered the workforce immediately instead of attending school. This foregone income is a critical component of human capital investment analysis.

In economics, factors of production are the inputs used to create goods and services, traditionally categorized as land, labor, and capital. Cash (money) is a financial asset used as a medium of exchange to facilitate transactions, but it is not a physical input that directly produces output in the production process.