Hi everyone,
If you know how to solve any of the following GMATPrep questions, please let me know.
Thank you,
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1) Equal amounts of water were poured into empty jars of different capacities, which made one jar ¼ full and the other jar 1/3 full. If the water in the jar with the lesser capacity is then poured into the jar with the greater capacity, what fraction of the larger jar will be filled with water?
The correct answer is ½
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2) If two of the four expressions x+y, x+5y, x-y, 5x-y are chosen at random, what is the probability that their product will be of the form x^2 – (by)^2. where b is an integer?
The correct answer is 1/6
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3) There are 15 slate rock, 20 pumice rocks, and 10 granite rocks randomly distributed in a certain field. If 2 rocks are to be chosen at random and without replacement, what is the probability that both rocks will be slate rocks?
The correct answer is 7/66
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4)
Ann $450,000
Bob $360,000
Cal $190,000
Dot $210,000
Ed $680,000
The table above shows the total sales recorded in July for the 5 salespeople at Acme Truck Sales. It was discovered that one of Cal’s sales was incorrectly recorded as one of Ann’s sales. After this error was corrected, Ann’s total sales were still higher than Cal’s total sales, and the media of the 5 sales totals was $330,000. What was the value of the incorrectly recorded sale?
The correct answer is $120,000