In a certain population, there are 4 times as many people aged twenty-one or under as there are people over twenty-one. The ratio of those twenty-one or under to the total population is  Choose the correct answer.
A) 4 to 5  B) 1 to 3  C) 1 to 4  D) 2 to 3  E) 3 to 4
Consider the ratio of the under population of 21 to over the 21 as 4:1   therefore 4x:1X   Now the ratio of the under to the whole population becomes 4x/4x+1x   = 4/5   4 to 5nswer is 4 to 5
<result>A</result>
In a certain population, there are 4 times as many people aged twenty-one or under as there are people over twenty-one. The ratio of those twenty-one or under to the total population is