SOLUTION: in 1900 4% of the us population was made up of individuals who were 65 or older while in 2010 this same age group made up about 13% of the population. the proportion of the us popu

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: in 1900 4% of the us population was made up of individuals who were 65 or older while in 2010 this same age group made up about 13% of the population. the proportion of the us popu      Log On


   

Question 1151735: in 1900 4% of the us population was made up of individuals who were 65 or older while in 2010 this same age group made up about 13% of the population. the proportion of the us population that is 65 years or older increased by what percent from 1900 to 2010
Answer by ikleyn(52914) About Me  (Show Source):
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In 1900 the ratio was 4% = 0.04.


In 2010 the ratio was 13% = 0.13.


The answer to the problem's question is  %280.13-0.04%29%2F0.04 = 0.09%2F0.04 = 9%2F4 = 2.25 as a decimal, or 225% as percentage.


ANSWER.  The proportion of the US population that is 65 years or older increased by 225% from 1900 to 2010.