The primary, secondary and tertiary sectors, GDP and final goods, disguised unemployment, MGNREGA, and organised and unorganised, public and private work.
| GDP | value of final goods and services produced in a year |
| MGNREGA | 2005; 100 days of work a year |
| Public and private | railways, post office; TISCO, RIL |
| Sectors linked | cotton farm (primary) → mill (secondary) → truck and shop (tertiary) |
| Workers in a sector | share × total workers, e.g. 25% of 8,000 = 2,000 |
The book’s graph shows the secondary sector’s share of employment as 11% in 1977–78 and 25% in 2017–18. Suppose a district had 8,200 workers then and 11,700 now. How many worked in the secondary sector each time?
Working: 11% of 8,200; 25% of 11,700
Answer: 902 in 1977–78 and 2,925 in 2017–18