17.U.S. real GDP per capita in 2010 was _____ as much per person as in 1900.
18.Suppose a panel of economists predicts that a nation's real GDP per capita will double in
approximately 20 years. According to the rule of 70, what must be the predicted annual
growth rate of real GDP per capita?
19.Suppose a panel of economists predicts that a nation's real GDP per capita will have an
average annual growth rate of 2%. According to the rule of 70, how many years will it
take for this nation's real GDP per capita to double?
20.The rule of 70 indicates that a 6% annual increase in the level of real GDP would lead to
the output doubling in approximately _____ years.
21.The rule of 70 states that a variable's approximate doubling time equals:
22.The formula for the rule of 70, where
is number of years and
is growth rate, is
× 70 =