A recent census revealed the age distribution of the residents of Town Y, shown in the graph. Since the census was performed, no resident has moved into or away from Town Y and there have been no recorded births or deaths.Based on the given information, use the drop-down menus to most accurately complete the following statements.The census indicates that lgwIRcy times as many residents were children or teenagers as were seniors.If, at the time of the census, there were 540 more people aged 0–39 than people aged 40 or greater, then the population of Town Y at the time of the census was lgwIRcy _mofa留学圈mofaGRE在线题库系统_GRE在线搜题_GRE题库解析_GRE真题机经_GRE课程_GRE培训机构

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A recent census revealed the age distribution of the residents of Town Y, shown in the graph. Since the census was performed, no resident has moved into or away from Town Y and there have been no recorded births or deaths.Based on the given information, use the drop-down menus to most accurately complete the following statements.The census indicates that times as many residents were children or teenagers as were seniors.If, at the time of the census, there were 540 more people aged 0–39 than people aged 40 or greater, then the population of Town Y at the time of the census was

正确答案： 2.65,1500

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知识点概述
本题涉及图表理解（解读饼图中各年龄段占比信息）和比例计算（根据占比关系进行数量计算）的知识点。解析
1. 计算儿童或青少年与老年人数量倍数关系：儿童占比20%，青少年占比25%，老年人占比17%，儿童或青少年占比共\(20\% + 25\%=45\%\)，是老年人占比的\(45\%\div17\%\approx2.65\)倍。 2. 计算城镇人口总数：0 - 39岁人群占比为\(20\%+23\% = 43\%\)，40岁及以上人群占比为\(15\% + 17\%=32\%\)，两者占比差值为\(43\% - 32\% = 11\%\)，已知0 - 39岁比40岁及以上多540人，设总人口为\(x\)，则\(11\%x = 540\)，\(x=540\div11\%\approx4909\)。

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