Calculate the following values with the aid of the rule of 72. a. If the annual growth rate is 1.8% it will take years for a country's population to double. b. If it takes per capita real GDP 28 years to double, then the average annual rate of growth in this variable is %. Enter your response rounded to 2 decimal places. c. If the annual growth rate in the capital stock is 6% a country's capital stock will double twice | in 24 years.|n Ergonia. 8 million workers produce a real output of $520 billion in 2018 and the same number of workers produce $540 billion in 2019. a. Ergonia's labour productivity was 33 in 2018 and $ in 2019. b. Ergonia's rate of productivity growth between 2018 and 2019 was|:| 96. Enter your response rounded 1:01 decimal place