下面是2013年8月11日的SAT官方每日一题的内容,是关于数学方面的,题型是选择。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。大家和无忧小编一起来看一下这个SAT官方每日一题吧。
SAT官方每日一题之数学---选择:
Mathematics > Standard Multiple Choice
Read the following SAT test question and then click on a button to select your answer.
If Kelly buyspens priced at
dollars each and
pens priced at
dollars each, which of the following expresses, in terms of
and
, the average (arithmetic mean) price, in dollars, of these pens?
(A)
(B)
(C)
(D)
(E)
The correct answer is D
Explanation
The average price of the pens is equal to the total price of all of the pens divided by the total number of pens. There arepens priced at
dollars each, so the total price of these pens is
dollars. There are
pens priced at
dollars each, so the total price of these pens is
dollars. Thus the total price of all of the pens is
dollars, and the total number of pens is
, the average price, in dollars, of all of these pens is
.
下面为大家提供一些和这些SAT官方每日一题相似的题目,供大家练习:
The sum, product, and average (arithmetic mean) of three integers are equal. If two of the integers areand
, the third integer is
(A)
(B)
(C)
(D)
(E)
The correct answer is D
Explanation
You have three integers,,
, and
, whose sum, product, and average are equal. Since
is one of the numbers, the product is
. So the sum and average are also equal to
. Therefore,
, and
.
以上就是关于2013年8月11日SAT官方每日一题中数学部分的详细内容,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。