Class 12

The fundamental economic problem is scarcity — unlimited human wants versus limited resources — which forces every society to make choices and bear opportunity costs. The Production Possibility Curve (PPC) shows the maximum combinations of two goods an economy can produce. Resources are allocated through three questions (what, how, for whom) using different economic systems: capitalist, socialist, or mixed. Nepal follows a mixed economy.

A market is the mechanism through which buyers and sellers exchange goods and services. Markets are classified by competition into perfect competition and imperfect competition (monopoly, monopolistic competition, oligopoly). Revenue is the money a firm receives from sale: Total Revenue (TR = P×Q), Average Revenue (AR = TR/Q), and Marginal Revenue (MR = ΔTR/ΔQ). Under perfect competition AR = MR = P (horizontal line); under monopoly AR slopes downward and MR lies below AR with the same intercept and twice the slope.

Cost is the monetary expenditure incurred by a firm in producing goods. In the short run, some factors are fixed (giving Total Fixed Cost — a horizontal line) and some are variable (giving Total Variable Cost — an inverse-S shape). Total Cost = TFC + TVC. Dividing by output gives Average Fixed Cost (rectangular hyperbola), Average Variable Cost (U-shaped), and Average Total Cost (U-shaped). Marginal Cost is U-shaped and cuts both AVC and ATC at their minimum points from below.

A firm is a single producing unit; an industry is a group of firms producing homogeneous products. Equilibrium of a firm means the output at which it maximises profit. Two approaches: (1) TR-TC approach — profit is maximum where the vertical gap between TR and TC is the largest; (2) MR-MC approach — equilibrium where MR = MC and MC cuts MR from below (sufficient condition). Under perfect competition the firm is a price taker (P = AR = MR) and equilibrium is at MR = MC. Under monopoly the firm is a price maker (downward AR, MR below AR) and equilibrium is also at MR = MC but at a higher price and lower output than perfect competition.

Factor pricing determines the rewards of the four factors of production: land earns rent, labour earns wages, capital earns interest, and entrepreneurship earns profit. Rent arises from differences in fertility (Ricardian view) or as a surplus over opportunity cost (modern view). Wages are determined by productivity and labour market conditions; the subsistence theory says wages hover around subsistence level. Interest is the price of capital, determined by saving and investment (classical theory). Profit is the reward for bearing risk (Hawley) or uncertainty (Knight). Nepal examples: Terai land rent, minimum wage Rs 15,000+/month, NRB policy rate.

A bank is a financial institution that accepts deposits, grants loans, and creates credit. Nepal's banking system has four layers — central bank (NRB, established 2013 BS), commercial banks (Nabil, NIC Asia, RBB), development banks (NDBL, ADBL), and microfinance institutions. NRB issues currency, acts as banker to the government, and controls credit through monetary policy. Commercial banks create credit through the money-multiplier process. The money market deals in short-term funds (T-bills, call money); the capital market deals in long-term funds (shares, bonds). Monetary policy is expansionary (to boost growth) or contractionary (to control inflation).

Government finance (public finance) studies how the government raises revenue and spends it for public welfare. Government expenditure is classified as recurrent (salaries, interest, subsidies — recurring every year) or capital (roads, hydro, schools — creating assets). Revenue is tax-based (income tax, VAT, customs) or non-tax (fees, fines, dividends from NEA, NTC). Taxes are direct (income, wealth — burden falls on payer) or indirect (VAT, excise — burden shifted). Tax rate structures are progressive (rate rises with income), proportional (same rate), or regressive (rate falls with income). Adam Smith's four canons of taxation are equity, certainty, convenience, and economy. The government budget shows estimated revenue and expenditure — surplus (R > E), deficit (R < E), or balanced (R = E).

International trade is the exchange of goods and services between countries. It allows nations to specialise where they have comparative advantage, broadens the variety of goods available, and transmits technology. The **Balance of Trade (BOT)** records only the visible goods exported and imported; the **Balance of Payment (BOP)** records all international transactions — visible, invisible (services), capital, and official reserve. A trade deficit (imports > exports) is normal for developing countries like Nepal. The **exchange rate** is the price of one currency in terms of another — fixed (pegged by central bank) or floating (market-determined). **Free trade** opens borders; **protectionism** uses tariffs and quotas. **Ricardo's comparative advantage theory** says even if one country is more efficient in everything, both gain by specialising where their *opportunity cost* is lowest.

**Poverty** is the inability to meet basic needs — Nepal measures **absolute poverty** as living below Rs 3,222 per person per month (poverty line, NLSS 2010/11); the poverty rate fell from 42% (1995/96) to 18.7% (2022/23, NPC estimate). **Inequality** is measured by the Lorenz curve and the **Gini coefficient** (Nepal's Gini is 0.30 — moderate). **Unemployment** is when willing and able workers cannot find jobs; Nepal's unemployment rate is around 6% (NLSS), but **underemployment** in agriculture is far higher. Types of unemployment: frictional, structural, cyclical, seasonal, disguised. **Human resources** are the population equipped with education, skills and health. Nepal's **Human Development Index (HDI)** for 2023/24 is **0.602** with **rank 143 out of 193** countries — medium human development but with large gaps between provinces (Bagmati 0.632 vs Karnali 0.484).

Nepal's foreign trade has grown rapidly but is heavily skewed toward imports. In **Fiscal Year 2021/22**, total foreign trade was Rs 212,048 crore — exports Rs 20,003 crore (9.4%) and imports Rs 192,045 crore (90.6%), giving a record trade deficit of **Rs 172,042 crore**. Major exports are readymade garments, pashmina, carpets, tea, cardamom, pulses, juice, and handicrafts; major imports are petroleum, gold, iron & steel, machinery, electronics, vehicles, and food. India is the largest trading partner (about 60% of trade), followed by China, USA, UAE, and Indonesia. Nepal joined **WTO on 23 April 2004** (WTO established 1 January 1995) and **SAFTA** came into force on 1 January 2006. **Foreign employment** — Nepali workers in Gulf countries, Malaysia, Korea (EPS) — has surged since the 1990s; **remittance** in 2023/24 was Rs 1,007 billion (20.4% of GDP), the single largest source of foreign exchange and a key driver of poverty reduction.

Development planning is the deliberate attempt by the government to implement, monitor and coordinate economic decisions to achieve chosen national goals. Hugh Dalton defined it as "deliberate direction by persons in charge of large resources of economic activities towards chosen ends." Nepal began planning with the First Plan (1956) and is now implementing the Fifteenth Plan (2019/20–2023/24) with the vision "Prosperous Nepal, Happy Nepali." Plans are formulated by the National Planning Commission (NPC), forwarded to ministries, approved by the Council of Ministers, and passed by Parliament.

The Sustainable Development Goals (SDGs) are a universal agreement among UN member states — 17 goals and 169 targets — adopted in September 2015 and effective from 1 January 2016, replacing the Millennium Development Goals (2000–2015). The SDGs rest on the 5Ps: Planet, People, Prosperity, Peace, and Partnership. Nepal is committed to the 2030 Agenda and has localised the SDGs through its plans and the SDG Status Report. Nepal's poverty rate has fallen to 18.7% (2022/23), but challenges remain in hunger, quality education, gender equality and decent work.

Statistics is the science of numerical statements of facts that are capable of analysis and interpretation. In the plural sense, statistics means numerical facts (data) collected systematically for a predetermined purpose; in the singular sense, it is the science of methods and techniques of collection, presentation, analysis and interpretation of data. Statistics has four aspects — collection, organisation, analysis, and interpretation. It is widely used in economics, planning, business, state administration, natural science, social science and mathematics. Limitations: statistics does not study individuals, is not suitable for qualitative phenomena, its laws are not exact, and it can be misused.

Data are numerical facts obtained by counting or enumerating. Before collecting data the investigator must be clear about the objective, scope, source, method, units, accuracy required, and type of enquiry. There are two types of data — primary (collected for the first time by the investigator, original) and secondary (collected by someone else and used by another person). Five methods of primary data collection exist: direct personal interview, indirect oral interview, information from correspondents, mailed questionnaire, and questionnaire sent through enumerators — each with merits and demerits. Sources of secondary data are published (government reports, journals, books) and unpublished (research, records). Precautions are needed because secondary data may be biased, outdated, or unsuitable.