1) According to the “Rule of 70" if a variable grows at a constant rate of 5% per year, approximately how many years would it take for the level of that variable to double? A. 14 В. 350 С. 70 D. 65

Microeconomic Theory
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Chapter17: Capital And Time
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1) According to the "Rule of 70" if a variable grows at a constant rate of 5% per year, approximately
how many years would it take for the level of that variable to double?
Α. 14
В. 350
С. 70
D. 65
2) Suppose that x; = (1.03)'xo and y; = (1.05)'yo. Let z be given by z =
growth rates of x and y are constant. Approximately home many years will it take for the level of
z to double?
(y/x). Assume that the
A. 8.75
В. 140
C. It will never double.
D. 35
3) Real GDP per capita in the U.S. in 2018 is $52,879. Suppose that the U.S. Government expects
Real GDP per capita to grow at a constant rate of 3% per year for the next 20 years, that is until
year 2038. What would the level of per-capita GDP approximately be in the USA in 2038
according to the Government's expectations?
A. $84,606.
B. $95,505.
C. $1,089,307.
D. None of the above.
Transcribed Image Text:1) According to the "Rule of 70" if a variable grows at a constant rate of 5% per year, approximately how many years would it take for the level of that variable to double? Α. 14 В. 350 С. 70 D. 65 2) Suppose that x; = (1.03)'xo and y; = (1.05)'yo. Let z be given by z = growth rates of x and y are constant. Approximately home many years will it take for the level of z to double? (y/x). Assume that the A. 8.75 В. 140 C. It will never double. D. 35 3) Real GDP per capita in the U.S. in 2018 is $52,879. Suppose that the U.S. Government expects Real GDP per capita to grow at a constant rate of 3% per year for the next 20 years, that is until year 2038. What would the level of per-capita GDP approximately be in the USA in 2038 according to the Government's expectations? A. $84,606. B. $95,505. C. $1,089,307. D. None of the above.
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