新SAT官方Daily Practise每日一题数学代数题
- 2017年06月16日09:59 来源：小站教育作者：小站SAT编辑
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摘要：今天起，本系列将给大家带来SAT官方的每日一练真题，各个项目都有，持续更新，希望大家同步多练习。今天这里分享的是6月15日的数学代数题，一起来练习吧！
Read the following SAT test question and then click on a button to select your answer.
6月官方Daily Practice 每日一练数学，点击进入
Lisa gives her little brother Sam a 15-second (sec)head start in a 300-meter (m) race. During the race,Sam runs at an average speed of 5 m/sec and Lisa runs at an average speed of 8 m/sec, not including the head start. Which of the following best approximates the number of seconds that had passed when Lisa caught up to Sam?
A.5
B.25
C.40
D.55
重点单词：
solve [sɔlv] v. 解决，解答
multiple ['mʌltipl] adj. 许多，多种多样的
equation [i'kweiʃən] n. 相等，方程(式), 等式，均衡
（答案解析请翻页查看）
