课程咨询
美国本科留学资料领取

扫码添加助教

免费领取

备考资料大礼包

扫码关注公众号

SAT模拟考试题:SAT数学练习题(13)

2016-08-11 16:52:25来源:网络

  Question #4: A vehicle runs from town A to town B at a speed of 20 miles/hour while another vehicle runs from town B to town A at a speed of 60 miles/hour. Both vehicles start their trips at the same time and the distance between towns is 100 miles. How long does it take from the time they start running to the moment they are at the same point on the road?

  (a) 1 hour

  (b) 1 hour and 15 minutes

  (c) 1 hour and 30 minutes

  (d) 1 hour and 45 minutes

  (e) 2 hours and 15 minutes

  100 miles = d1 + d2 This is equation #1.

  It take the same time for the 2 cars to meet: t = d1/(20 miles/hour) = d2/(60miles/hour). This is equation #2.

  We solve the system of 2 equations to find d1 and d2.

  From equation #2, 3·d1 = d2.

  Then 100 miles = d1 + d2 = 4·d1, so d1 = 25 miles and d2 = 75 miles.

  The answer is t = d1/20miles/hour = 25/20 = 5/4 = 1 hour and 15 minutes.

  Question #5: Given the list of integers: -2, 2, 0, 6, 8, 0, -5, 9, 10, 4, which of the following statements is true?

  (a) mode < median < average

  (b) median < mode < average

  (c) median < average < mode

  (d) mode = median < average

  (e) average < median < mode

  Answer: We need to rearrange the list of integers in order: -5, -2, 0, 0, 2, 4, 6, 8, 9, 10. The average will be the sum of all integers divided by the number of integers, 32/10 = 3.2

  The median will be the mean of the 2 middle numbers, 2 and 4, so the median is 3.

  The mode is 0, as 0 occurs the most in the list.

  The correct answer is mode < median < average.

SAT水平能力测试【0元免费测试】

本文关键字: SAT模拟考试 SAT数学

美本留学资料大礼包

微信扫描二维码 回复【美本资料】

机考SATCB官方样题|可汗练习题|AP全科大纲/备考资料包

更多资料
更多>>
更多内容

添加美本助教号

自动领取备考资料大礼包

1. 打开手机微信【扫一扫】,识别上方二维码;
2.添加【美本助教】,自动领取留学备考资料大礼包。

可汗学院新SAT题目完整版

微信扫描下方二维码 即可获取

SAT1500分录播课(旗舰版+1对1) 托福精讲录播课(旗舰版) 托福8-10人直播VIP小班
更多>>
更多公开课>>

2024美本留学资料免费领取

微信添加美本助教

新东方美本助教
更多>>
更多资料

添加新东方在线美本助教号

自动领取备考资料大礼包

1. 打开手机微信【扫一扫】,识别上方二维码;
2.添加【Ella助教】,自动领取留学备考资料大礼包。