A country will roughly double its gdp in twenty years if its annual growth rate is 3.5 using the rule of 70.
The rule of 70 is used to determine the time it takes a country to double it growth rate.
It makes use of the annual growth rate of the country.
To double in 20years =70/20 = 3.5
Therefore, A country will roughly double its gdp in twenty years if its annual growth rate is 3.5 using the rule of 70.
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