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题目内容
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?
Mark walks at a pace of 4 kilometers per hour on the first day for 6 hours, and the same distance on the second day. If he walks for T hours in total, then what is the average speed of the vehicle on the second day?
If the average speed is (50-x) when climbing up the mountain, but (50+x) when climbing down the same mountain. Which of the following value of x could ensure that the average speed of the entire journey up and down the mountain is the greatest?
Mark drives from home to work. The total distance of the drive is 150 miles. During the first half of the drive, Mark drives at a speed of 30miles/hour. During the second half of the drive, Mark drives at a speed of 50miles/hour. Which of the following statements must be true?

Indicate all such statements.
It is 500 kilometers between city G and city N. A person named A drives from G to N with the speed of 80 kilometers/hour, a person named B drives from N to G with the speed of 70 kilometers/hour. How many kilometers are between the two people with city N when they meet each other?

Give your answer as a fraction.
How many ounces of 20% grape juice needs to be added to a bottle of 20-ounce 12% grape juice so that the mixture is 15% grape?

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