GMAT数学模拟练习题及答案【9】

　　A certainfarmer pays $30 per acre per month to rent farmland. How much does the farmer pay per month torent a rectangular plot of farmland that is 360 feet by 605 feet? (43,560 square feet = 1 acre)

　　A. $5,330

　　B. $3,360

　　C. $1,350

　　D. $360

　　E. $150

　　参考答案：E

　　题目翻译：农民大叔花30租一个月一亩地，那他租一个360feet宽605feet长的农场要多钱?

　　题目全解：(360*605)/43560=5;5*30=150.

　　If thelength of a certain rectangle is 2 greater than the width of the rectangle,what is the perimeter of the rectangle?

　　(1) The length of each diagonal of the rectangleis 10.

　　(2) The area of the rectangular region is 48.

　　A.Statement (1) ALONE is sufficient, but statement (2) alone is notsufficient.

　　B.Statement (2) ALONE is sufficient, but statement (1) alone is notsufficient.

　　C. BOTH statementsTOGETHER are sufficient, but NEITHER statement ALONE issufficient.

　　D. EACHstatement ALONE is sufficient.

　　E.Statements (1) and (2) TOGETHER are NOT sufficient.

　　参考答案：D

　　题目翻译：一个矩形，长比宽长2，求周长。

　　题目全解：(1)对角线是10;(2)面积是48.

　　根据题目设长为x，宽为x-2。根据条件一，可得等式 x^2+(x-2)^2=10*10;可求得x;可得周长。SUFF;

　　根据条件2，x*(x-2)=48，可得x，可得周长。SUFF。