北美SAT数学真题解析!大家在备考SAT数学考试的时候,可以多看一些关于真题的解析,让大家更好地来备考。下面小编就为大家汇总了一些真题解析,供大家参考。

  Mathematics>Standard Multiple Choice

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

  During his busiest week as an origami artist, Nate made 20 origami figures per hour on weekdays and 30 per hour on the weekend. During this particular week, Nate made a total of 650 origami figures by working 5 times as many hours on weekdays as he did on the weekend. If he worked x hours on the weekdays and y hours on the weekend, how many total hours did he work during this week?

  A.5

  B.20

  C.25

  D.30

  答案:D

  解析:

  Option D is correct. If Nate worked 5 times as many hours on weekdays than on weekends, the first equation in the system is x=5y. If Nate made 20 origami figures per hour during weekdays, and 30 origami figures per hour during the weekend, and 650 origami figures the second equation in the system is 20x+30y=650.

  Next, substitute 5 y for x in the second equation and solve for y to find that the total number of hours Nate worked on the weekend was 5. Then, substitute 5 for y in the first equation and solve for x to find that the total number of hours Nate worked on weekdays was 25. Lastly, find the total number of hours Nate worked during the week by finding x+y=30; that is, Nate worked 30 hours total.

  以上就是为大家整理的“北美SAT数学真题解析”,希望通过上述内容的学习,对大家接下里的SAT数学备考有一定的帮助,小编预祝同学们取得高分!


展开显示全文