GMAT数学充分练习题第一辑

GMAT数学充分练习题

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SECTIION 5 30 minutes 25 questions 1. At a certain picnic, each of the guests was served either a single scoop or a double scoop of ice cream. How many of the guests were served a double scoop of ice cream?

6. If a real estate agent received a commission of 6 percent of the selling price of a certain house, what was the selling price of the house? (1) The selling price minus the real estate agent’s commission was $84,600. (2) The selling price was 250 percent of the original purchase price of $36,000.

(1) At the picnic, 60 percent of the guests were served a double scoop of ice cream. (2) A total of 120 scoops of ice cream 7. What is the value of |x|? were served to all the guests at the (1) x = -|x| picnic. (2) x2 = 4 2. By what percent was the price of a certain candy bar increased? (1) The price of the candy bar was increased by 5 cents. (2) The price of the candy bar after the increase was 45 cents.

8. What is the value of z in the triangle above? (1) x + y = 139 (2) y + z = 108 9. A certain bakery sells rye bread in 16-ounce loaves and 24-ounce loaves, and all loaves of the same size sell for the same price per loaf regardless of the number of loaves purchased. What is the price of a 24-ounce loaf of rye bread in this bakery? (1) The total price of a 16-ounce loaf and a 24-ounce loaf of this bread is $2.40. (2) The total price of two 16-ounce loaves and one 24-ounce loaf of this bread is $3.40.

3. A circular tub has a band painted around its circumference, as shown above. What is the surface area of this painted band? (1) x = 0.5 (2) The height of the tub is 1 meter. 4. Is it true that a > b? (1) 2a > 2b (2) a + c > b + c 5. A thoroughly blended biscuit mix includes only flour and baking powder. What is the ratio of the number of grams of baking powder to the number of grams of flour in the mix?

10. If

x n , what is the value of x? y

(1) yn = 10

1 (1) Exactly 9.9 grams of flour is (2) y = 40 and n = contained in 10 grams of the mix. 4 (2) Exactly 0.3 gram of baking powder is contained in 30 grams of the mix. 11. If m and n are consecutive positive integers, is m greater than n?126

GMAT数学充分练习题

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(1) m – 1 and n +1 are consecutive positive integers. (2) m is an even integer. 12. Paula and Sandy were among those people who sold raffle tickets to raise money for Club X. If Paula and Sandy sold a total of 100 of the tickets, how many of the tickets did Paula sell? (1) Sandy sold

(1)

1 1 1 x 3 (2) 4 x 2 3 5

17. If a,b, and c are integers, is a – b + c greater than a + b – c ? (1) b is negative. (2) c is positive.

2 as many of the raffle 18. If x + 2y + 1 = y – x, what is the 3 value of x? tickets as Paula did. (2) Sandy sold 8 percent of all the raffle (1) y2 = 9 tickets sold for Club X. (2) y = 313. Is the integer n odd? (1) n is pisible by 3. (2) n is pisible by 5. 3.2□△6 14. If □and△each represent single digits in the decimal above, what digit does □ represent? (1) When the decima

l is rounded to the nearest tenth, 3.2 is the result. (2) When the decimal is rounded to the nearest hundredth, 3.24 is the result. 15. A certain company currently has how many employees? (1) If 3 additional employees are hired by the company and all of the present employees remain, there will be at least 20 employees in the company. (2) If no additional employees are hired by the company and 3 of the present employees resign, there will be fewer than 15 employees in the company. 16. If x is equal to one of the numbers 1 3 2 what is the value of x? , , or 4 8 5 19. If n is an integer, then n is pisible by how many positive integers? (1) n is the product of two different prime numbers. (2) n and 23 are each pisible by the same number of positive integers. 20. How many miles long is the route from Houghton to Callahan? (1) It will take 1 hour less time to travel the entire route at an average rate of 55 miles per hour than at an average rate of 50 miles per hour. (2) It will take 11 hours to travel the first half of the route at an average rate of 25 miles per hour.

21. What is the circumference of the circle above? (1) The length of arc XYZ is 18. (2) r = s 22. If p,q,r, and s are nonzero numbers, is (p – 1)(q - 2)2(r – 3)3(s – 4)4 ≧ 0?

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(1) q > 2 and s > 4 (2) p > 1 and r > 3

23. If ☉ denotes a mathematical operation, does x☉y=y☉x for all x and y? (1) For all x and y, x☉y = 2(x2 + y2). (2) For all y, 0☉y = 2 y2 24. All trainees in a certain aviator training program must take both a written test and a flight test. If 70 percent of the trainees passed the written test, and 80 percent of the trainees passed the flight test, what percent of the trainees passed both tests? (1) 10 percent of the trainees did not pass either test. (2) 20 percent of the trainees passed only the flight test. 25. If n is an integer, is (1)n an integer? 15

3n is an integer. 15 8n (2) is an integer. 15

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SECTION 6 30 minutes 25 questions 1. If x and y are positive, what’s the value of x ? (1) x = 3.927y (2) y = 2.279 2. John and David each received a salary increase. Which one received the greater salary increase? (1) John’s salary increased 8 percent. (2) David’s salary increased 5 percent. 3. Carlotta can drive from her home to her office by one of two possible routes. If she must also return by one of these routes, what is the distance of the shorter route?

(1) The diameter of the bicycle wheel, including the tire, was 0.5 meter. (2) The wheel made twenty 360-degree rotations per minute. 7. What is the value of the sum of a list of n odd integers? (1) n = 8 (2) The square of the number of integers on the list is 64. 8. If a certain animated cartoon consists of a tota …… 此处隐藏：12279字，全部文档内容请下载后查看。喜欢就下载吧 ……