【官方】SAT数学每日一题附答案和解析(2018年1月16日)

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MathematicsStandard Multiple Choice

Read the following SAT test question and thenclick on a button to select your

answer.

In 2004, the number of people aged 16 years orolder in the United States was

approximately 223357000. According to the Bureau of Labor Statistics, at that

time 66% of the populationaged 16 and older was employed, and women made up

about 46.4% of this category. Approximately how many women aged 16 and older

were employed in 2004?

A.68400000

B.104000000

C.147400000

D.157000000

答案：A

解析：

Choice A is correct. The number of people aged 16 and older who were employed

in the United States in 2004 can be found by calculating 66% of 223357000.

66% of 223357000 can be found as follows:

0.66*223357000=147415620

Hence 147415620 people aged 16 or older were employed in the United States in

2004.

Of this number, 46.4% were women. To calculate the number of women in this

age group whowere employed, find 46.4% of 147415620:

0.464*147415620=68400847.68

Therefore, approximately 68400000 women aged 16 and older were employed in

the UnitedStates in 2004.