【备考每日练】GMAT综合推理题 巧解关于速度的代数问题

2015年07月27日16:57 来源：小站整理

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GMAT备考，除了背背背，更重要的就是练练练！通过练习，巩固知识，熟练技巧，最终才能在GMAT考试中发挥出色，取得好成绩，所以练习的重要性不言而喻。因此，小编为大家精心准备了GMAT考试各类题型的练习题和答案解析，帮助大家每日一练，为考试做好准备。一起来看今天的题目吧。

今日练习题为综合推理题，题目如下：

The Quasi JX is a new car model. Under ideal driving conditions, the Quasi JX's fuel economy is E kilometers per liter(E km/l) when its driving speed is constant at S kilometers per hour (S km/h).

In terms of the variables S and E, select the expression that represents the number of liters of fuel used in 1 hour of driving under ideal driving conditions at a constant speed S, and select the expression that represents the number of liters of fuel used in a 60 km drive under Ideal driving conditions at a constant speed S. Make only two selections, one in each column.

1. Liters of fuel in 60 km = ?

A. S/E B. E/S C. 60/E D. 60/S E. E/60

2. Liters of fuel in 1 h = ?

A. S/E B. E/S C. 60/E D. 60/S E. E/60

正确答案：

C A

解题思路：

一升可以走E千米，即1 (L)=E (K);一小时可以走S千米，即1 (h)=S (K)

问题1：60千米耗油数量=60/E

问题2:1小时耗油量=S/E