GWD31MATH6Word文档格式.docx

1、Q2:If every car sold last week at a certain used-car dealership was either a coupe or a sedan, what was the average （arithmetic mean） sale price for all the cars that were sold at the dealership last week?（1） The average sale price for the sedans that were sold at the dealership last week was $10,60

2、0.（2） The average sale price for the coupes that were sold at the dealership last week was $8,400.A. Statement （1） ALONE is sufficient, but statement （2） alone is not sufficient.B. Statement （2） ALONE is sufficient, but statement （1） alone is not sufficient.C. BOTH statements TOGETHER are sufficient

3、, but NEITHER statement ALONE is sufficient.D. EACH statement ALONE is sufficient.E. Statements （1） and （2） TOGETHER are NOT sufficient.Q3:Pat, Kate, and Mark charged a total of 162 hours to a certain project. If Pat charged twice as much time to the project as Kate and 1/3 as much time as Mark, how

4、 many more hours did Mark charge to the project than Kate?A. 18B. 36C. 72D. 90E. 108Q4:What is the greatest prime factor of 2100 - 296?A. 2B. 3C. 5D. 7E. 11Q5:If b, c, and d are constants and x2 + bx + c = （x + d）2 for all values of x, what is the value of c?（1） d = 3（2） b = 6Q6:If a, b, k, and m ar

5、e positive integers, is ak a factor of bm?（1） a is a factor of b.（2） k mQ7:A certain university will select 1 of 7 candidates eligible to fill a position in the mathematics department and 2 of 10 candidates eligible to fill 2 identical positions in the computer science department. If none of the can

6、didates is eligible for a position in both departments, how many different sets of 3 candidates are there to fill the 3 positions?A. 42B. 70C. 140D. 165E. 315Q8: R S T Q U P V W Note: Figure not drawn to scale.In the figure above, the area of square region PRTV is 81, and the ratio of the area of sq

7、uare region XSTU to the area of square region PQXW is 1 to 4. What is the length of segment RS?A. 5B. 5.5C. 6D. 6.5E. 7Q9:If the average （arithmetic mean） of four different numbers is 30, how many of the numbers are greater than 30?（1） None of the four numbers is greater than 60.（2） Two of the four

8、numbers are 9 and 10, respectively.Q10:If each of the students in a certain mathematics class is either a junior or a senior, how many students are in the class?（1） If one student is to be chosen at random from the class to attend a conference, the probability that the student chosen will be a senio

9、r is 4/7.（2） There are 5 more seniors in the class than juniors.Q11: Not drawn to scale.A rectangular picture is surrounded by a boarder, as shown in the figure above. Without the boarder the length of the picture is twice its width. If the area of the boarder is 196 square inches, what is the lengt

10、h, in inches, of the picture, excluding the boarder?A. 10B. 15C. 30D. 40E. 60Q12:Each week Connie receives a base salary of $500, plus a 20 percent commission on the total amount of her sales that week in excess of $1,500. What was the total amount of Connies sales last week?（1） Last week Connies ba

11、se salary and commission totaled $1,200.（2） Last week Connies commission was $700.Q13:If n is the greatest positive integer for which 2n is a factor of 10!, then n =B. 4D. 8E. 10Q14:A total of 30 percent of the geese included in a certain migration study were male. If some of the geese migrated duri

12、ng the study and 20 percent of the migrating geese were male, what was the ratio of the migration rate for the male geese to the migration rate for the female geese?Migration rate for geese of a certain sex = （number of geese of that sex migrating） / （total number of geese of that sex）A. 1/4B. 7/12C

13、. 2/3D. 7/8E. 8/7Q15:Of the following, which is greatest?A. （1/5）-2B. （1/3）-2C. 3-2D. 5-2E. 23Q16:Is x - yx - z?（1） yz（2） x 0Q17:Raymond purchased a package of ground beef at a cost of $1.98 per pound. If, for the same amount of money, Raymond could have purchased a piece of steak that weighed 40 pe

14、rcent less than the package of ground beef, what was the cost per pound of the steak?A. $4.95B. $4.20C. $3.60D. $3.30E. $3.10Q18:A rectangular region has a fence along three sides and a wall along the fourth side. The fenced side opposite the wall is twice the length of each of the other two fenced

15、sides. If the area of the rectangular region is 128 square feet, what is the total length of the fence, in feet?A. 4B. 8C. 16D. 32E. 64Q19:At a certain company, 25 percent of the employees are male and 50 percent of the employees are sales staff. What is the number of employees at this company?（1） Exactly 7 of the employees at the company are males who are sales staff.（2） There are 16 more female employees than male employees at the company.-