AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Countries have different populations, so total income does not show what an average person earns. Per capita income (total income ÷ population) allows meaningful comparison between countries.
The examiner wants two things: why total income fails (different population sizes make it incomparable) and what per capita income does (gives average earning per person). Both points together make a complete 1-mark answer. Always link the concept to "average person" for full credit.