题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
141	Last year, a certain company began manufacturing product X and sold every unit of product X that it produced. Last year the company's total expenses for manufacturing product X were equal to $100,000 plus 5 percent of the company's total revenue from all units of product X sold. If the company made a profit on product X last year, did the company sell more than 21,000 units of product X last year?(1) The company's total revenue from the sale of product X last year was greater than $110,000(2) For each unit of product X sold last year, the company's revenue was $5.
142	When a player in a certain game tossed a coin a number of times, 4 more heads than tails resulted. Heads or tails resulted each time the player tossed the coin. How many times did heads result?(1)The player tossed the coin 24 times.(2)The player received 3 points each time heads resulted and 1 point each time tails resulted, for a total of 52 points.
143	Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then made withdrawals of $50 from the account on the 15th of each of the remaining months of last year. There were no other transactions in the account last year. If the closing balance of Carl's account for May of last year was $2,600, what was the range of the monthly closing balances of Carl's account last year?(1)Last year the closing balance of Carl's account for April was less than $2,625.(2)Last year the closing balance of Carl's account for June was less than $2,675.
144	Are all of the numbers in a certain list of 15 numbers equal?(1)The sum of all the numbers in the list is 60.(2)The sum of any 3 numbers in the list is 12.
145	Quadrilateral RSTU shown above is a site plan for a parking lot in which side RU is parallel to side ST and RU is longer than ST. What is the area of the parking lot?(1)$$RU = 80$$ meters(2)$$TU = 20\sqrt{10}$$ meters
146	If the average (arithmetic mean) of six numbers is 75, how many of the numbers are equal to 75 ?(1)None of the six numbers is less than 75.(2)None of the six numbers is greater than 75.
147	What was the total amount of revenue that a theater received from the sale of 400 tickets, some of which were sold at x percent of full price and the rest of which were sold at full price?(1)x = 50(2)Full-price tickets sold for $20 each.
148	Any decimal that has only a finite number of nonzero digits is a terminating decimal. For example, 24, 0.82, and 5.096 are three terminating decimals. If r and s are positive integers and the ratio $$\frac r s $$ is expressed as a decimal, is $$\frac r s$$ a terminating decimal?(1)$$90 < r < 100$$(2)$$s = 4$$
149	In the figure above, what is the value of x + y ?(1)x = 70(2)△ABC and △ADC are both isosceles triangles.
150	What amount did Jean earn from the commission on her sales in the first half of 1988 ?(1)In 1988 Jean's commission was 5 percent of the total amount of her sales.(2)The amount of Jean's sales in the second half of 1988 averaged $10,000 per month more than in the first half.
151	The price per share of Stock X increased by 10 percent over the same time period that the price per share of Stock Y decreased by 10 percent. The reduced price per share of Stock Y was what percent of the original price per share of Stock X ?(1)The increased price per share of Stock X was equal to the original price per share of Stock Y.(2)The increase in the price per share of Stock X was $$\frac{10} {11}$$ the decrease in the price per share of Stock Y.
152	In the figure above, if the area of triangular region D is 4, what is the length of a side of square region A ?(1)The area of square region B is 9.(2)The area of square region C is $$\frac{64}{9}$$
153	If Sara's age is exactly twice Bill's age, what is Sara's age?(1)Four years ago, Sara's age was exactly 3 times Bill's age.(2)Eight years from now, Sara's age will be exactly 1.5 times Bill's age.
154	A report consisting of 2,600 words is divided into 23 paragraphs. A 2-paragraph preface is then added to the report. Is the average (arithmetic mean) number of words per paragraph for all 25 paragraphs less than 120 ?(1)Each paragraph of the preface has more than 100 words.(2)Each paragraph of the preface has fewer than 150 words.
155	In the rectangular coordinate system above, if OP < PQ, is the area of region OPQ greater than 48 ?(1)The coordinates of point P are (6,8).(2)The coordinates of point Q are (13,0).
156	$${S}=\frac{\frac{2}{n}}{\frac{1}{x}+\frac{2}{3x}}$$In the expression above, if $${x}{n}≠{0}$$, what is the value of S?(1)x = 2n(2)$$n =\frac{1}{2}$$
157	If n is a positive integer and $$k = {5.1}{10}^{n}$$, what is the value of k ?(1)$$6,000 < k < 500,000$$(2)$${k}^{2}={2.601}{10}^{9}$$
158	If Carmen had 12 more tapes, she would have twice as many tapes as Rafael. Does Carmen have fewer tapes than Rafael?(1)Rafael has more than 5 tapes.(2)Carmen has fewer than 12 tapes.
159	If x is an integer, is $$x \mid x \mid < {2}^{X}$$ ?(1)$$x < 0$$(2)$$x = -10$$
160	If n is a positive integer, is the value of b - a at least twice the value of $${3}^{n}-{2}^{n}$$ ?(1)$$a ={2}^{n+1}$$ and $$b={3}^{n+1}$$(2)$$n = 3$$

序号

题目内容

141

Last year, a certain company began manufacturing product X and sold every unit of product X that it produced. Last year the company's total expenses for manufacturing product X were equal to $100,000 plus 5 percent of the company's total revenue from all units of product X sold. If the company made a profit on product X last year, did the company sell more than 21,000 units of product X last year?(1) The company's total revenue from the sale of product X last year was greater than $110,000(2) For each unit of product X sold last year, the company's revenue was $5.

142

When a player in a certain game tossed a coin a number of times, 4 more heads than tails resulted. Heads or tails resulted each time the player tossed the coin. How many times did heads result?(1)The player tossed the coin 24 times.(2)The player received 3 points each time heads resulted and 1 point each time tails resulted, for a total of 52 points.

143

Beginning in January of last year, Carl made deposits of $120 into his account on the 15th of each month for several consecutive months and then made withdrawals of $50 from the account on the 15th of each of the remaining months of last year. There were no other transactions in the account last year. If the closing balance of Carl's account for May of last year was $2,600, what was the range of the monthly closing balances of Carl's account last year?(1)Last year the closing balance of Carl's account for April was less than $2,625.(2)Last year the closing balance of Carl's account for June was less than $2,675.

144

Are all of the numbers in a certain list of 15 numbers equal?(1)The sum of all the numbers in the list is 60.(2)The sum of any 3 numbers in the list is 12.

145