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1. How the rule of 70 demonstrated that countries with even small differences in GDP growth rates matter to its people.
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Answer #1

Rule of 70 :

Number of years to double = 70 / annual percentage growth rate

So if the annual percentage growth rate of GDP is as low as 3% ,

then number of years it takes real GDP to double = 70 / 3 = 23.33 = 24 years ( approximately )

So rule of 70 shows that GDP can double in 24 years in a poor country . 24 years can be a short period of time if we consider a generation . The hard work and consistency of one generation for 24 years can double the GDP per capita .

So countries with even small differences in GDP growth rates matter to its citizens .

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