题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
41	A student`s average (arithmetic mean) test score on 4 tests is 78. What must be the student`s score on a 5th test for the student`s average score on the 5 tests to be 80?
42	Last week Chris earned x dollars per hour for the first 40 hours worked plus 22 dollars per hour for each hour worked beyond 40 hours. If last week Chris earned a total of 816 dollars by working 48 hours, what is the value of x ?
43	In the figure above, what is the ratio of the measure of angle B to the measure of angle A?
44	If n is a prime number greater than 3, what is the remainder when $${n}^{2}$$ is divided by 12 ?
45	$${{1}\over{1+\frac{1}{3}}} -{{1}\over{1+\frac{1}{2}}}$$
46	The positive two-digit integers x and y have the same digits, but in reverse order. Which of the following must be a factor of x + y?
47	In a certain sequence of 8 numbers, each number after the first is 1 more than the previous number. If the first number is -5, how many of the numbers in the sequence are positive?
48	A total of s oranges are to be packaged in boxes that will hold r oranges each, with no oranges left over. When n of these boxes have been completely filled, what is the number ofboxes that remain to be filled?
49	If 0 < a < b < c, which of the following statements must be true?I. 2a > b + cII. c - a > b - aIII. $$\frac{c}{a}$$ < $$\frac{b}{a}$$
50	In the xy-plane, the origin O is the midpoint of line segment PQ. If the coordinates of P are (r,s), what are the coordinates of Q ?
51	Which of the following equations is NOT equivalent to $${10}{y}^{2}=({x}+{2})({x}-{2})$$?
52	The table shows the numbers of packages shipped daily by each of five companies during a 4-day period. The standard deviation of the numbers of packages shipped daily during the period was greatest for which of the five companies?
53	Company Q plans to make a new product next year and sell each unit of this new product at a selling price of $2. The variable costs per unit in each production run are estimated to be 40% of the selling price, and the fixed cost of each production run are estimated to be $5,040. Based on these estimated costs, how many units of the new product will Company Q need to make and sell in order for their revenue to equal their total costs for each production run?
54	The dial shown above is divided into equal-sized intervals. At which of the following letters will the pointer stop if it is rotated clockwise from S through 1,174 intervals?
55	According to the table shown, the estimated number of home-schooled students in State A approximately what percent greater than the number in State D?
56	The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above?
57	When n liters of fuel was added to a tank that was already $$\frac1 3$$ full, the tank was filled to $$\frac7 9$$ of its capacity. In terms of n, what is the capacity of the tank, in liters?
58	The smaller rectangle in the figure above represents the original size of a parking lot before its length and width were each extended by w feet to make the larger rectangular lot shown. If the area of the enlarged lot is twice the area of the original lot, what is the value of w?
59	$$\frac{1}{(0.75-1)}=$$
60	Kevin invested $8,000 for one year at a simple annual interest rate of 6 percent and invested $10,000 for one year at an annual interest rate of 8 percent compounded semiannually. What is the total amount of interest that Kevin earned on the two investments?

序号

题目内容

A student`s average (arithmetic mean) test score on 4 tests is 78. What must be the student`s score on a 5th test for the student`s average score on the 5 tests to be 80?

Last week Chris earned x dollars per hour for the first 40 hours worked plus 22 dollars per hour for each hour worked beyond 40 hours. If last week Chris earned a total of 816 dollars by working 48 hours, what is the value of x ?