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2017年3年29日SAT官方每日一题---数学选择.

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  下面是2015年3月29日的SAT官方每日一题的内容,是关于数学方面的,题型是数学选择。SAT官方每日一题是collegeboard每天都会发布的题目,关于SAT考试的三个部分的各个题型。下面我们就一起来看一下这个SAT官方每日一题吧。

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

  Machine X , working at a constant rate, can produce x bolts per hour. Machine Y , working at a constant rate, can produce x+6 bolts per hour. In terms of x , how many bolts can both machines working together at their respective rates produce in 4 hours?

  (A) 4x+12

  (B) 4x+24

  (C) 6x+30

  (D) 8x+24

  (E) 8x+36

  The correct answer is D

  Explanation

  Machine X , working at a constant rate, can produce x bolts per hour, and machine Y , working at a constant rate, can produce x+6 bolts per hour. Therore, in one hour, both machines working together at their respective rates can produce x+x+6=2x+6 bolts. It follows that in 4 hours, both machines working together at their respective rates can produce 4(2x +6)=8x+24 bolts.

  以上就是关于2015年3月29日的SAT官方每日一题中数学选择的详细内容,包括了题目和选项以及答案,后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容,这样就可以更好有不间断的练习,也就能在日积月累的过程中得到提高。

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