Given the following data for a country: total food grain production = 220 million tonnes, total consumption = 250 million tonnes, imports = 30 million tonnes, exports = 10 million tonnes. Calculate: 1) the self‑sufficiency index (SSI), 2) the import requirement after accounting for exports, and 3) whether the country is self‑sufficient. State the SSI as a percentage rounded to two decimal places.
Answer
SSI = 88.00%; Import requirement = 20 million tonnes; Not self‑sufficient
The correct answer is SSI = 88.00%; Import requirement = 20 million tonnes; Not self‑sufficient — Since SSI < 100%, the country is not self‑sufficient
Step-by-step solution
- SSI = (Production ÷ Consumption) × 100 = (220 ÷ 250) × 100 = 88.00%
- Import requirement = Consumption – Production = 250 – 220 = 30 million tonnes
- After accounting for exports, required imports = Import requirement – Exports = 30 – 10 = 20 million tonnes
- Since SSI < 100%, the country is not self‑sufficient
Common mistake: Ignoring the role of exports while computing import requirement
Concept tested: Self‑sufficiency index calculation
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