2013-12-18 09:57:39 来源: 互联网 责编:楷维留学指南
2013年12月15日SAT真题类型:Mathematics > Standard Multiple Choice 数学选择
Read the following SAT test question and then click on a button to select your answer.
A gasoline tank on a certain tractor holds
gallons of gasoline. If the tractor requires
gallons to plow
acres, how many acres can the tractor plow with a tankful of gasoline?
(A)![]()
(B)![]()
(C)![]()
(D)![]()
(E)![]()
2013年12月15日SAT考试官方每日一题答案:A
解析:In the question, you are told that
gallons of gasoline can plow
acres and you are asked to find how many acres, call it
, can be plowed by
gallons. You can set up a ratio of the number of gallons of gasoline used to the number of acres plowed. Therefore, you have
. Cross-multiplying and solving for
gives you the answer of
acres, or
acres.
为大家提供与12月15日SAT真题同类题型的一道题目,供各位考生练习:
A geologist has
rocks of equal weight. If
rocks and a
-ounce weight balance on a scale with
rocks and a
-ounce weight, what is the weight, in ounces, of one of these rocks?
(A)![]()
(B)![]()
(C)![]()
(D)![]()
(E)![]()
解析:Let
equal the weight of each rock, in ounces. The weight on one side of the scale is
ounces and the weight on the other side is
ounces. Since the two weights balance, you can write the equation
. Solving this equation yields
.
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