Question

in 2012, the u.s. population was about 314 million. how many people over the age of 64 were in the u.s.? 275,064,000 38,936,000 25,322,581 3,893,600,000 u.s. population by age over 64 under 18 18 to 44 45 to 64

Explanation:

Step1: Find the percentage of population over 64

First, we calculate the percentage of the population over 64. The total percentage of all age groups should be 100%. So we sum the percentages of the other groups: \(25.7\% + 39.9\% + 22.0\% = 87.6\%\). Then the percentage of population over 64 is \(100\% - 87.6\% = 12.4\%\).

Step2: Calculate the number of people over 64

The total U.S. population in 2012 was 314 million, which is \(314000000\) people. To find the number of people over 64, we multiply the total population by the percentage (in decimal form). So \(314000000\times0.124 = 38936000\).

Answer:

38,936,000