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OG12 OG15 OG16 OG17 At a loading dock, each worker on the night crew loaded $$\frac{3}{4}$$ as many boxes as each worker on the day crew. If the night crew has $$\frac{4}{5}$$ as many workers as the day crew, what fraction of all the boxes loaded by the two crews did the day crew load?
OG12 OG15 OG16 The probability is $$\frac{1}{2}$$ that a certain coin will turn up heads on any given toss. If the coin is to be tossed three times, what is the probability that on at least one of the tosses the coin will turn up tails?
GMAT、gmat题库、gmat模考、gmat考满分The figure shows two squares, and the points W, X, Y, and Z lie on a line. If the distance between W and X is equal to the distance between X and Y and to the distance between Y and Z, then the area of the smaller square is what fraction of the area of the larger square?
Chris mixed 3 pounds of raisins with 4 pounds of nuts. If a pound of nuts costs 3 times as much as a pound of raisins, then the total cost of the raisins was what fraction of the total cost of the mixture?
$$\frac{3}{8}$$ of all students at Social High are in all three of the following clubs: Albanian, Bardic, and Checkmate. $$\frac{1}{2}$$ of all students are in Albanian, $$\frac{5}{8}$$ are in Bardic, and $$\frac{3}{4}$$ are in Checkmate. If every student is in at least one club, what fraction of the student body is in exactly 2 clubs?
Two secretaries, Sally and Lisa, type at even but difference paces. Sally is more experienced and types 80 characters per minute. Lisa, a beginner, can type only 30 characters per minute. On one day, Lisa starts typing before Sally. At some point, both have typed the same number of characters. Then both continue typing and Sally types 800 more characters until her computer breaks down. Assuming Lisa does not take any break, how long, in hours, will it take her to finish typing the same number of characters?
OG17 OG18 Which of the following fractions is closest to $$\frac{1}{2}$$?
OG17 OG18 OG19 OG20 OG2022 The probability that event M will not occur is 0.8 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur?
PREP07 Test 1 Alice's take-home pay last year was the same each month, and she saved the same fraction of her take-home pay each month. The total amount of money that she had saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did not save. If all the money that she saved last year was from her take-home pay, what fraction of her take-home pay did she save each month?
Manhattan If Renee earns a raise of between 5% and 10%, non-inclusive, by what fraction could her salary have increased?
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Each of 16 individuals is to be given an identifying code consisting of one or more digits. Within each individual’s code, all digits must be distinct and in ascending order. What is the minimum number of distinct digits required such that no two individuals have the same code?
OG21 OG2022 In the figure above, ABCD is a parallelogram and E is the midpoint of side AD. The area of triangular region ABE is what fraction of the area of quadrilateral region BCDE?
181215 $$(4^{3})^{2}$$*$$(5^{2})^{3}$$+$$16^{3}$$*$$(5^{3})^{2}$$=?
181215 A post office issued 10 of new stamps. Someone collected three of them. If two of the 10 stamps are chosen, what is the probability that none of the two stamps will be included in the three collected by this person?
190124 It took a person 15 minutes to reach B from A and 25 minutes to ride from B to A. The distance between A and B is 2 km. What's the average speed of the person?
190321 How much water should be added into the 20m^3 alcohol solution whose concentration is 80% to get the alcohol solution whose concentration is 50%?
190415 A circle has the same area as a square. What is the ratio of the diagonal of the square to the diameter of the circle?
190407 f(m,n)=$$(-1)^{m}$$$$\frac{n}{2m+n}$$,g(n)=min{f(1,n),f(2,n),f(3,n)}.当n = 1,2,3时，g(n)的最大值是多少？
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If , what is the value of ?
Manhattan $${1}\over{{3}+\frac{4}{7}}$$=