In a certain population, there are 2 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
Answers.
A) 1 to 2	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 2:1   therefore 2x:1X   Now the ratio of the under to the whole population becomes 2x/2x+1x   = 2/3   Answer is 2 to 32 /2 +1= 
<gadget id="calculator">2 /2 +1</gadget>
<output>2</output>
2/3   Answer is 2 to 3
<result>D</result>
In a certain population, there are 2 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