The populations and gross domestic products (GDP) in billion USD of three countries A, B and C in the years 2010 and 2020 are shown in the two figures below.

In terms of increase in per capita GDP from 2010-2020, their ranking from high to low is

Formula Used : $$\text{Per capita GDP} = \frac{\text{GDP}}{\text{Population}}$$ , 
Solution:COUNTRY A:
Per capita GDP (2020) - Per capita GDP (2010) = ​
$$\frac{324}{160}$$ - ​$$\frac{115}{150}$$= 2.025-0.767=1.258

COUNTRY B:
Per capita GDP (2020) - Per capita GDP (2010) = $$\frac{2622}{1400}$$ - $$\frac{1675}{1200}$$ = 1.873-1.396 =0.477

COUNTRY C:
Per capita GDP (2020) - Per capita GDP (2010) = $$\frac{264}{220}$$ - $$\frac{177}{180}$$=1.200-0.983=0.217

Increase in per capita GDP from 2010-2020, their ranking from high to low is A>B>C

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