Questions: The bar graph shows that life expectancy, the number of years newborns are expected to live, in a particular region has increased dramatically since ancient times. Find the percent increase in average life expectancy of the region from the Stone Age to 2016.

The bar graph shows that life expectancy, the number of years newborns are expected to live, in a particular region has increased dramatically since ancient times. Find the percent increase in average life expectancy of the region from the Stone Age to 2016.
Transcript text: The bar graph shows that life expectancy, the number of years newborns are expected to live, in a particular region has increased dramatically since ancient times. Find the percent increase in average life expectancy of the region from the Stone Age to 2016.
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Solution

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Solution Steps

Step 1: Identify the life expectancy in the Stone Age
  • From the bar graph, the life expectancy in the Stone Age is 25 years.
Step 2: Identify the life expectancy in 2016
  • From the bar graph, the life expectancy in 2016 is 69 years.
Step 3: Calculate the increase in life expectancy
  • Subtract the life expectancy in the Stone Age from the life expectancy in 2016: \[ 69 \text{ years} - 25 \text{ years} = 44 \text{ years} \]

Final Answer

  • The increase in average life expectancy from the Stone Age to 2016 is 44 years.
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