题库 | 考满分，百万出国党的口碑之选。

序号	题目内容
41	What is the value of the two-digit integer x ?(1)The sum of the two digits is 3.(2)x is divisible by 3.
42	The figure above shows the circular cross section of a concrete water pipe. If the inside radius of the pipe is r feet and the outside radius of the pipe is t feet, what is the value of r ?(1)The ratio of t - r to r is 0.15 and t - r is equal to 0.3 foot.(2)The area of the concrete in the cross section is 1.29π square feet.
43	What is the tenths digit in the decimal representation of a certain number?(1)The number is less than $$\frac1 3$$(2)The number is greater than $$\frac1 4$$
44	Robots X, Y, and Z each assemble components at their respective constant rates. If $${r}_{x}$$ is the ratio of Robot X's constant rate to Robot Z's constant rate and $${r}_{y}$$ is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?(1)$${r}_{x}<{r}_{y}$$(2)$${r}_{y}< 1$$
45	If r is a constant and $${a}_{n}$$ = rn for all positive integers n, for how many values of n is $${a}_{n} < 100$$ ?(1)$${a}_{50} = 500$$(2)$${a}_{100}+{a}_{105} = 2,050$$
46	If r is represented by the decimal 0.t5, what is the digit t?(1)$$r<\frac{1}{3}$$(2)$$r<\frac{1}{10}$$
47	If the two floors in a certain building are 9 feet apart, how many steps are there in a set of stairs that extends from the first floor to the second floor of the building?(1)Each step is $$\frac3 4$$ foot high.(2)Each step is 1 foot wide.
48	In June 1989, what was the ratio of the number of sales transactions made by Salesperson X to the number of sales transactions made by Salesperson Y?(1) In June 1989, Salesperson X made 50 percent more sales transactions than Salesperson Y did in May 1989.(2) In June 1989, Salesperson Y made 25 percent more sales transactions than in May 1989.
49	If a < x < b and c < y < d, is x < y?(1)a < c(2)b < c
50	How many people are directors of both Company K and Company R ?(1)There were 17 directors present at a joint meeting of the directors of Company K and Company R, and no directors were absent.(2)Company K has 12 directors and Company R has 8 directors.
51	If x and y are positive, is $$\frac x y$$ greater than 1 ?(1)$$xy >1$$(2)$$x-y >0$$
52	A clothing store acquired an item at a cost of x dollars and sold the item for y dollars. The store`s gross profit from the item was what percent of its cost for the item?(1)$$y - x = 20$$(2)$$\frac y x=\frac5 4$$
53	(n-x)+(n-y)+(n-z)+(n-k)What is the value of the expression above?(1)The average (arithmetic mean) of x, y, z, and k is n.(2)x, y, z, and k are consecutive integers.
54	A taxi company charges f cents for the first mile of the taxi ride and m cents for each additional mile. How much does the company charge for a 10-mile taxi ride?(1)The company charges $0.90 for a 2-mile ride.(2)The company charges $1.20 for a 4-mile ride.
55	Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?(1)Guy`s gross income increased by 4 percent on January 1, 1989.(2)Guy`s deductions increased by 15 percent on January 1, 1989.
56	What is the value of z in the triangle above?(1)x + y=139(2)y + z = 108
57	Max has $125 consisting of bills each worth either $5 or $20. How many bills worth $5 does Max have?(1)Max has fewer than 5 bills worth $5 each.(2)Max has more than 5 bills worth $20 each.
58	If the ratio of the number of teachers to the number of students is the same in School District M and School District P, what is the ratio of the number of students in School District M to the number of students in School District P ?(1)There are 10,000 more students in School District M than there are in School District P.(2)The ratio of the number of teachers to the number of students in School District M is 1 to 20.
59	If a total of 84 students are enrolled in two sections of a calculus course, how many of the 84 students are female?(1)$$\frac{2}{3}$$ of the students in Section 1 are female.(2)$$\frac{1}{2}$$ of the students in Section 2 are male.
60	What is the value of n in the equation $$-25 + 19 + n = s$$?(1)$$s = 2$$(2)$$\frac{n}{s} = 4$$

序号

题目内容

What is the value of the two-digit integer x ?(1)The sum of the two digits is 3.(2)x is divisible by 3.