In a certain population, there are 4 times as many people aged thirtty-one or under as there are people over thirtty-one. The ratio of those thirty-one or under to the total population is
Pick:
A) 1 to 2	B) 1 to 3	C) 4 to 5	D) 2 to 3	E) 3 to 4
4 to 5onsider 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   Answer is 4 to 5
<result>C</result>
In a certain population, there are 4 times as many people aged thirtty-one or under as there are people over thirtty-one. The ratio of those thirty-one or under to the total population is