Question

The table below gives the life expectancy of a child (at birth) in the United States for selected years from 1920 to 1990.
(Source: Department of Health and Human Services)
Year 1920 1930 1940 1950 1960 1970 1980 1990
Life expectancy 54.1 59.7 62.9 68.2 69.7 70.8 73.7 75.4

Complete the sentence:
Between 1930 and 1940, the life expectancy of a child increased by A)___________ years of life which is an average increase of B)___________ years of life expectancy each year.
Round answers to 2 decimal places if necessary.

Answer

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