In 2019, China was the world’s largest economy, with a

$23.5 trillion GDP (as measured in U.S. dollars). China was also one of the world’s fastest-growing economies, with an annual growth rate of real GDP of 6%.

a. If the country maintains the same growth rate, how many years will it take for China’s GDP to double?

b. The Philippines’ GDP was $1 trillion, but its growth rate was equal to China’s. How many years will it take for the Philippines’ economy to double?

c. Although the Philippines and China have the same annual growth rate, their economies are much different in size. How can you explain the size difference to someone who is unfamiliar with scaling large numbers?

Which strategies would you use?