Sub 505 (Easy)
0.1 + 0.1 2 + 0.1 3 =
505-555 (Easy)
Leona bought a 1-year, $10,000 certificate of deposit that paid interest at an annual rate of 8 percent compounded semiannually. What was the total amount of interest paid on this certificate at maturity?
Sub 505 (Easy)
On Monday, a person mailed 8 packages weighing an average (arithmetic mean) of 12 3 8 pounds, and on Tuesday, 4 packages weighing an average of 15 1 4 pounds. What was the average weight, in pounds, of all the packages the person mailed on both days?
555-605 (Medium)
Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from
Sub 505 (Easy)
It would take one machine 4 hours to complete a large production order and another machine 3 hours to complete the same order. How many hours would it take both machines, working simultaneously at their respective constant rates, to complete the order?
505-555 (Easy)
Car A is 20 miles behind car B, which is traveling in the same direction along the same route as Car A. Car A is traveling at a constant speed of 58 miles per hour and Car Bis traveling at a constant speed of 50miles per hour. How many hours will it take for Car A to overtake and drive 8 miles ahead of Car B?
555-605 (Medium)
At a loading dock, each worker on the night crew loaded 3/4 as many boxes as each worker on the day crew. If the night crew has 4/5 as many workers as the day crew, what fraction of all the boxes loaded by the two crews did the day crew load?
Sub 505 (Easy)
A certain country had a total annual expenditure of $1.2 x 10^12 last year. If the population of the country was 240 million last year, what was the per capita expenditure?
Sub 505 (Easy)
Water consists of hydrogen and oxygen, and the approximate ratio, by mass, of hydrogen to oxygen is 2:16. Approximately how many grams of oxygen are there in 144 grams of water?
Sub 505 (Easy)
The ratio of the length to the width of a rectangular advertising display is approximately 3.3 to 2. If the width of the display is 8 meters, what is the approximate length of the display, in meters?
Sub 505 (Easy)
The ratio 2 to 1/3 is equal to the ratio
555-605 (Medium)
On a scale that measures the intensity of a certain phenomenon, a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?
Sub 505 (Easy)
An operation @ is defined by the equation a@b = (a - b) / (a + b), for all numbers a and b such that a ≠ -b. If a ≠ -c and a@c = 0, then c =
Sub 505 (Easy)
If the operation @ is defined by x @ y = √ x y x @ y = x y − √ for all positive numbers x and y, then (5@45)@60 =
555-605 (Medium)
(x + 1 x − 1) 2 If x ≠ 0 and x ≠ 1, and if x is replaced by 1/x everywhere in the expression above, then the resulting expression is equivalent to
505-555 (Easy)
If T = 5/9 * (K - 32), and if T = 290, then K =
Sub 505 (Easy)
If y (3 x − 5 2) = y and y ≠ 0 , then x =
505-555 (Easy)
Mary's income is 60 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income?
Sub 505 (Easy)
When 1/10 percent of 5,000 is subtracted from 1/10 of 5,000, the difference is
505-555 (Easy)
Which of the following is the value of √ 3 √ 0.000064 − − − − √ 3 − − − − − √