巍哥数学-GRE数学第二次直播.pptVIP

15. At a certain elementary school, 10 percent of the fifth-grade students are members of the school band. If 12 percent of the fifth-grade boys and 8 percent of the fifth-grade girls are members of the band, what percent of the fifth-grade students at the school are boys? A. 10% B. 12% C. 20% D. 30% E. 50% 正确答案：E 16. Quantity A Quantity B The least integer x that satisfies the inequality -3 x3>-30 A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given. 正确答案：C 17. How many values of x are there such that x is an integer and |3x-2|<8? A. One B. Two C. Three D. Four E. Five 正确答案：E 18. Square FGHJ has sides of length x. Region FGJ is a sector of the circle with center F. Quantity A Quantity B The area of the shaded region x2/4 A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given. 正确答案：B 19. The legs of a right triangle are in the ratio of 3 to 1. If the length of the hypotenuse of the triangle is , then the perimeter of the triangle is between A. 14 and 15 B. 13 and 14 C. 12 and 13 D. 11 and 12 E. 10 and 11 正确答案：A 20. A total of 1,500 boxes are stored in four warehouses. The number of boxes stored in the individual warehouses are x, y, z, and w respectively, where w=2x and z=2y. Quantity A Quantity B x+y 500 A. Quantity A is greater. B. Quantity B is greater. C. The two quantities are equal. D. The relationship cannot be determined from the information given. 正确答案：C 21. Amy and Jed are among the 35 people, who are standing in a line, one behind the other, waiting to buy movie tickets. The number of people in front of Amy plus the numb