GRE考满分·题库

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题目内容
In the first year, the sales of a store is a. Its sales increase by x% every two years, and reach 1.4a in the fifth year.

Quantity A

x

Quantity B

20
The principal a decreased by x% (10 < x < 40) in the first year, and then decreased by x% in the second year.

Quantity A

The amount of the remaining money

Quantity B

a (1- $$\frac{2x}{100}$$)
A becomes 40% greater than before, and B becomes 20% less than before, what is the ratio of the new ratios of A:B to the original ratio of A:B?

Give your answer in fraction.
A shoe store has a discount of 20% to 40%. If the original price of the shoes is 59.5$, which of the following could be the selling price?

Indicate all such measures.
An item was discounted by 20%, and the reduced price was discounted by 40%, what percentage did the original price discount off?

Give your answer as a percent.
In the first year, the sales of a store is x dollars.

In the second year, its sales increase by 10% than the first year.

In the third year, its sales drops by 5% than the second year.

Quantity A

The percent increase/decrease of the store in the third year than the first year

Quantity B

5%
The price of a product was a in 2001, the price increased 10% in 2002, and then decreased 5% in 2003.

Quantity A

The percent increase (or decrease) from 2001 to 2003

Quantity B

5%
In an organization that has boys and girls, if the number of boys and of girls decreases by the same amount simultaneously, there will be fewer boys than girls.

Quantity A

The percentage of decrease in the number of boys

Quantity B

The percentage of decrease in the number of girls

Quantity A

0.8 minutes less than 0.08 hour

Quantity B

4 minutes
The average speed of a car is 104km/h,then what is the speed per hour in terms of mile?(1mile=1.6km)
At 12:00 the water in a tank started to go out through one outlet with the speed of 120 liters per minute. At 14:00 another outlet was opened, and altogether 250 liters of water went out per minute through all these two outlets, and the water tank was totally drained at 16:30. Then how many liters of water was there in the tank at 12:00?
The speed of a car is 90 kilometers per hour. Which of the following must be true? (1mile=1.603 kilometers, 1foot=0.304 meters)
An American paid $100 for an item in country D and got the change in 1000 D bills. Which of the following statements individually provide(s) sufficient additional information to determine how many dollars the item is?

Indicate allsuch statements.
To fill a pool, A need to work alone for 12 minutes and B needs to work alone for 20 minutes. How many minutes will it take if A and B work together?

Give your answer as a decimal.
Printer A, B, and C together need 9 hours to finish a task, while B and C together need 12 hours to finish the same task. How many hours will it take for printer A to finish the task alone?
To fill an empty tank, inlet pipe A and B could first work 1 hour and 20 minutes together to fill $$\frac{2}{3}$$ of the task, while inlet pipe B alone work another 50 minutes to fill the rest. In this case, in how many hours will it take if A alone fill the entire tank?
It takes the input pipe 10 hours to fill an empty tank to its full capacity, and it takes the output pipe 7 hours to pour the water out from full capacity to empty. The tank is full now and the input pipe and output pipe are both open for 1 hour, then shut the input pipe, and keep the output open, how many hours will the tank be empty after shutting the input pipe?

Give your answer as a decimal.
Someone walks s steps in t seconds, then how many steps can she/he walks in $$\frac{1}{10}$$ minutes?
Sara drove from her company to her home at a constant speed of 55 kilometers per hour for two hours, and then drove another 2.2 hours at a constant speed of 65 kilometers per hour. Then how many more minutes did she need to drive from her company to her home at a constant speed of 50 kilometers per hour?
Two people walk the same distance of 15miles, in which A spends 15 minutes less than B, and the speed of B is 10miles/h slower than the speed of A. What is the speed of B?

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