Difficult GMAT Questions
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Working alone at its constant rate, machine K took 3 hours to produce ¼ of the units produced last Friday. Then machine M started working and the two machines, working simultaneously at their respective constant rates, took 6 hours to produce the rest of the unites produced last Friday. How many hours would it have taken machine M, working along at its constant rate, to produce all of the units produced last Friday?
Â
(A)Â 8
(B)Â Â 12
(C)Â 16
(D)Â 24
(E)Â Â 30
Written by GHCV on November 13th, 2008 with 8 comments.
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My car has several faults, each of which is caused by one single action. When I turn on the engine, open the door and close the sunroof, there is a clank and a bang. When I open the door, wind down the window and change gear, there is a twang and a rattle. When I close the sunroof, open the glove compartment and change gear, there is a twang and a clank.
If I open the door, turn on the engine and open the glove compartment, what will I hear?
 a twang
 a clank and a bang
 a bang
 a bang and a rattle
 nothing
Written by yaggarwal on November 6th, 2008 with 16 comments.
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At a fruit stand yesterday, the price of each apple was $0.10 more than the price of each orange. What was the total revenue from the sale of oranges at the fruit stand yesterday?
(1) The number of oranges sold at the fruit stand yesterday was 5 more than the number of apples.
(2) The total revenue from the sale of apples at the fruit stand yesterday was $15.00
Written by GHCV on October 29th, 2008 with 14 comments.
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If k is a positive constant and y = |x - k| - |x + k|, what is the maximum value of y? (Contributed by JR)
(1) x < 0
(2) k = 3
A) Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.
B) Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.
C) Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.
D) Each statement alone is sufficient to answer the question.
E) Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.
Written by Take GMAT Team on October 24th, 2008 with 15 comments.
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With Proposition 13, if you bought your house 11 years ago for $75,000, your property tax would be approximately $914 a year (1 percent of $75,000 increased by 2 percent each year for 11 years); and if your neighbor bought an identical house next door to you for $200,000 this year, his tax would be $2,000 (1 percent of $200,000). Without Proposition 13, both you and your neighbor would pay $6,000 a year in property taxes (3 percent of $200,000). Which of the following is the conclusion for which the author most likely is arguing in the passage above?
(A) Proposition 13 is unconstitutional because it imposes an unequal tax on properties of equal value.
(B) If Proposition 13 is repealed, every homeowner is likely to experience a substantial increase in property taxes.
(C) By preventing inflation from driving up property values, Proposition 13 has saved homeowners thousands of dollars in property taxes.
(D) If Proposition 13 is not repealed, identical properties will continue to be taxed at different rates.
(E) Proposition 13 has benefited some homeowners more than others.
Written by Take GMAT Team on October 23rd, 2008 with 22 comments.
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