Improving Countries’ Standards of Living


Use the Rule of 72 to estimate how long it will take for India, Spain, and South Africa to double their standards of living.

Using the research skills you have acquired, retrieve the following data from The World Bank database ( for India, Spain, and South Africa for 2010–2015, if available:

  • Telephone lines
  • Mobile cellular subscriptions
  • Secure Internet servers (per one million people)
  • Electricity production (kWh)

Prepare a chart that compares these three countries. Describe the key differences between the countries.