The percentage of households with an annual income of more than $40,000 is higher in Merton County than in any other county. However, the percentage of households with an annual income of $60,000 or more is higher in Sommer County.
If the statements above are true, which of the following must also be true?
The percentage of households with an annual income of $80,000 is higher in Sommer County than in Merton County.
Merton County has the second-highest percentage of households with an annual income of $60,000 or more.
The percentage of households with an annual income between $40,000 and $60,000 is higher in Merton County than in Sommer County.
The total number of households with an annual income of more than $40,000 is greater in Merton County than in Sommer County.
Average annual household income is higher in Sommer County than in Merton County.
因为设 M 市 40000-60000 为A1,60000 以上为B1,总人口为C1,S 市相应 A2, B2
和C2,则有(A1+B1)/C1>(A2+B2)/C2, B1/C1A2/c2,同时 A1/B1
不能为0,否则第一个不等式就不成立了
登录 或 注册 后可以参加讨论