Final answer:
The poverty rate in country A is 16.67% and in country B is 11.11%, calculated by dividing the number of people below the poverty line by the total population and multiplying by 100.
Step-by-step explanation:
Calculating Poverty Rates
To determine the poverty rate in a country, we divide the number of people living below the poverty line by the total population and then multiply the result by 100 to get a percentage. For country A, the calculation is as follows:
- Number of people living below the poverty line: 50 million
- Total population: 300 million
- Poverty rate calculation: (50 million ÷ 300 million) × 100 = 16.67%
Similarly, for country B:
- Number of people living below the poverty line: 100 million
- Total population: 900 million
- Poverty rate calculation: (100 million ÷ 900 million) × 100 = 11.11%
Hence, the poverty rate in country A is 16.67%, and in country B, it is 11.11%, which corresponds to option (a).