【官方】SAT数学每日一题附答案和解析(2018年1月16日)

小站整理2018-01-31 11:42:37

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摘要：每日一题的内容是由sat官方所出，质量虽不比真题，但备考期间，由于有效备考资料珍贵有限。大家可以每天拿官方的Daily Practice来练手。以下是2018年1月16日的SAT数学练习部分：

每日一练

Mathematics>Standard 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.

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