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  3. In year Y, the population of Colorado was approximately half that of New Jersey, and the land area of Colorado was approximately

In year Y, the population of Colorado was approximately half that of New Jersey, and the land area of Colorado was approximately

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问题 In year Y, the population of Colorado was approximately half that of New Jersey, and the land area of Colorado was approximately 14 times that of New Jersey. The population density(number of persons per unit of land area)of Colorado in year Y was approximately how many times the population density of New Jersey?
选项 A、 
B、 
C、 
D、 
E、 
答案A
解析 The information given in the question can be rewritten algebraically as follows.
population of Colorado ≈(1/2)×(population of New Jersey)
land area of Colorado ≈(14)×(land area of New Jersey)
Using the information given and the fact that population density is the number of persons per unit of land area, you can express the population density of Colorado in terms of the population density of New Jersey as follows.
population density or Colorado
Thus, the population density of Colorado was approximately 1/28 times the population density of New Jersey. The correct answer is Choice A.
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