Japan's real GDP was 548 trillion yen in 2011 and 560 trillion yen in 2012. Japan's population was 127.2 million in 2011 and 127.0 million in 2012.
Calculate
a. The growth rate of real GDP.
b. The growth rate of real GDP per person.
c. The approximate number of years it takes for real GDP per person in Japan to double if its real GDP growth rate returns to 3 percent a year and the population growth rate is main-tained.