Due to advances in medicine and higher standards of living, life expectancy has been increasing in most developed countries since the beginning of the 20th century.
The table below shows the average life expectancies, in years, of Americans from 1900–2010.
Year 1900 1910 1920 1930 1940 1950
Life Expectancy(Years) 47.3 50.0 54.1 59.7 62...
Year 1960 1970 1980 1990 2000 2010
Life Expectancy(Years) 69.7 70.8 73.7 75.4 76...
C. What year did the life expectancy surpass 60?
what, you can't look at the table and find the first entry that is greater than 60?
To find the year when life expectancy surpassed 60, you need to look for the first year in which the life expectancy in the table exceeds 60 years.
Let's go through each row in the table and find the year when the life expectancy is greater than 60:
Year: 1900, Life Expectancy: 47.3 (not greater than 60)
Year: 1910, Life Expectancy: 50.0 (not greater than 60)
Year: 1920, Life Expectancy: 54.1 (not greater than 60)
Year: 1930, Life Expectancy: 59.7 (not greater than 60)
Year: 1940, Life Expectancy: 62.0 (greater than 60)
Therefore, the life expectancy first surpassed 60 in the year 1940.