SAT每日一题不容小觑 8月29日SAT真题奉上

2013-09-06 17:47:28 来源: 互联网责编：楷维留学指南

楷维留学小编分享分享2013年8月29日SAT考试官方每日一题，每题都附有答案及相对应的答题解析，助力各位SAT备考的同学们。

好评率:100%

刘润博顾问 高级专家 (了解顾问评级) [高级升学导师] [资深职业规划师] [高级竞争力分析师] 办理国家：美国英国日本韩国德国法国新加坡意大利荷兰中国香港 免费留学方案 签约折扣预约 查看联系方式
好评率:64%

杨巍顾问 行业元老 (了解顾问评级) [高级职业导师] [高级升学导师] [高级竞争力分析师] 办理国家：美国英国澳大利亚 免费留学方案 签约折扣预约 查看联系方式
好评率:100%

肖书琴顾问 专家顾问 (了解顾问评级) [超级升学导师] [签证方案及材料专家] [高级职业导师] [包装与形象设计大师] 办理国家：英国澳大利亚法国 免费留学方案 签约折扣预约 查看联系方式

SAT考试2013年8月29日官方每日一题

2013年8月29日SAT真题

SAT真题类型：Mathematics > Standard Multiple Choice

　　Read the following SAT test question and then click on a button to select your answer.

　　The odometer of a new automobile functions improperly and registers only miles for every miles driven. If the odometer indicates miles, how many miles has the automobile actually been driven?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

2013年8月29日SAT考试官方每日一题答案：B

解析：In this problem, you are told that the odometer registers only miles for every miles driven. So the ratio of miles registered to miles driven is to or 2 over 3 . This can be expressed as

odometer reading over actual miles = 2 over 3

If the odometer indicates miles, the actual miles can be found using using the above relationship as follows:

48 over x = 2 over 3 and 2x = 144 and x=72

So if the odometer indicates miles, the actual number of miles driven is .

How to Avoid Errors When Working with Ratios

The most important thing with ratios is to be consistent in the way you set them up. If you mix up the terms, you won’t get the correct answer. For instance, if you put the registered mileage in the numerator of one ratio but the actual mileage in the numerator of the other ratio, you will come up with a wrong answer: