How manyseconds will it take for a car that is traveling at a constant rate of 45 milesper hour to travel a distance of 116 yards? (1mile = 1,160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12
参考答案：A
题目翻译：车速45迈，开116yards要几秒?
题目全解：116/((45*1160)/3600)=8
In thexy-plane, what is the slope of the line with equation 3x + 7y = 9?
A. –7/3
B. –3/7
C. 3/7
D. 3
E. 7
参考答案：B
题目翻译：3x + 7y = 9的斜率是?
题目全解：给分题，直接用公式或者移项两步解决。
| GMAT数学练习题及答案解析小结 |