Suppose that real GDP per capita is $50,000 and grows at a constant rate of 2% per year. According to the rule of 70, what will the value of real GDP per capita be in 70 years?
$200,000 |
$50,000 |
$100,000 |
$150,000 |
Ans:
The value of real GDP per capita be in 70 years = $200,000
Explanation
The rule of 70 is used to estimate the number of years it takes for a certain variable to double at a constant growth rate
Number of years to double = 70 / constant growth rate
= 70 / 2
= 35
As per rule 70, the value of real GDP per capita be in 35 years = $50,000 * 2
= $100,000
The value of real GDP per capita be in 70 years = $100,000 * 2
= $200,000
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