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OG12 OG15 OG16 OG17 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)$$\frac y x=\frac5 4$$
For each positive integer n, the integer n* is defined by $$ n^* = {n}^{2}$$ + 1. What is the value of the positive integer k ?(1) When k is divided by 4, the remainder is 1.(2) $$18 \leq k^* \leq 36$$
190124 The positive integer p is less than 50. When p is divided by 7, the remainder is 1. p=? 1: When p is divided by 9, the remainder is 7. 2: When p is divided by 4, the remainder is 3.
OG20 OG2022 7, 9, 6, 4, 5, x If x is a number in the list above, what is the median of the list? 1.x > 7 2.The median of the list equals the arithmetic mean of the list.
OG17 OG18 OG19 OG20 OG2022 The sum of 4 different odd integers is 64. What is the value of the greatest of these integers?(1) The integers are consecutive odd numbers.(2) Of these integers, the greatest is 6 more than the least.
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Machine folds boxes at a constant rate and can fold 300 boxes in 4 hours. Machine also folds boxes at a constant rate. How much less time would it take both machines running simultaneously to fold 300 boxes?

(1) Yesterday Machine folded 400 boxes and Machine P folded 200 boxes.

(2) Machine folds boxes at a rate of 150 boxes in 4 hours.
If Diana's stamp collection, $$\frac{4}{5}$$ of the stamps are Canadian, and $$\frac{3}{7}$$ of the Canadian stamps were issued before 1940. If 192 stamps in Diana's collection are Canadian stamps that were issued in 1940 or later, how many stamps in her collection are not Canadian?
MSR B is a boy aged 4 years 3 months whose height is 110 cm and whose weight is 19 kg. For each of the following statements, select Yes if, based on the given information, it must be true of B relative to a model population. Otherwise, select No.
OG19 OG20 OG2022 While a family was away on vacation, they paid a neighborhood boy $11 per week to mow their lawn and $4 per day to feed and walk their dog. If the family was away for exactly 3 weeks ,how much did they pay the boy for his services ?
190310 还原机经选题: 文字题&几何 A company consists of managers and employees. What is the total number of people in this company?
1: Managers account for 1/4 of the total number of managers, of which women account for 2/3.
2: The company has a total of 600 male managers.
OG12 A total of n trucks and cars are parked in a lot. If the number of cars is $$\frac1 4$$ the number of trucks,and $$\frac2 3$$ of the trucks are pickups, how many pickups, in terms of n, are parked in the lot?
OG12 OG15 OG16 OG17 OG18 OG19 OG20 OG2022 Xavier, Yvonne, and Zelda each try independently to solve a problem. If their individual probabilities for success are $$\frac{1}{4}$$, $$\frac{1}{2}$$ and $$\frac{5}{8}$$ respectively, what is the probability that Xavier and Yvonne, but not Zelda, will solve the problem?
OG12 OG15 OG16 OG17 OG18 The average distance between the Sun and a certain planet is approximately 2.3 x $${10}^{14}$$ inches. Which of the following is closest to the average distance between the Sun and the planet, in kilometers? (1 kilometer is approximately 3.9 x $${10}^{4}$$ inches.)
If $$\frac{1}{2}$$ of the money in a certain trust fund was invested in stocks, $$\frac{1}{4}$$ in bonds, $$\frac{1}{5}$$ in a mutual fund, and the remaining $10,000 in a government certificate, what was the total amount of the trust fund?
X, Y and Z each try independently to solve a problem. If their individual probabilities for success are $$\frac{1}{4}$$, $$\frac{1}{2}$$ and $$\frac{5}{8}$$, respectively, what is the probability that X and Y, but not Z, will solve the problem?
第一期 If n is a multiple of 5, what is the remainder when the positive integer n is divided by 6?
(1) The remainder when n is divided by 4 is 3.
(2) The remainder when n is divided by 12 is 3.
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If and are positive integers and if , which of the following must be true?
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[GMAT-Math-7213-q]

Which of the following inequalities is an algebraic expression for the shaded part of the number line above?

 
OG19-数学分册 For every even positive integer m, f(m) represents the product of all even integers from 2 tom, inclusive. For example, $$f(12) = 2 \times 4 \times 6 \times 8 \times 10 \times 12$$. What is the greatest prime factor of f(24) ?
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There are four cards in a box, each with a different number written on it -- either 1, 3, 4 or 5. What is the probability that the difference between the numbers on two randomly selected cards is not greater than 3?