展开全部

题目列表

题目内容
In a single line of people waiting to purchase tickets for a movie, there are currently 10 people behind Shandra. If 3 of the people who are currently in line ahead of Shandra purchase tickets and leave the line, and no one else leaves the line, there will be 8 people ahead of Shandra in line. How many people are in the line currently?
Tuk weighs 60 percent more than Kim, Lee weighs 50 percent less than Tuk, and Pat weighs 25 percent more than Lee. If Pat weighs 126 pounds, what is Kim`s weight?
Anne pays 150 percent more for a wholesale widget than Bart pays. Anne's retail price per widget is 15 percent greater than the wholesale price she paid. Bart`s retail price per widget is 185 percent greater than the wholesale price he paid.

Quantity A

Anne's retail price

Quantity B

Bart's retail price


Last year Leo bought two paintings. This year he sold them for $2,000 each. On one, he made a 25% profit, and on the other he had a 25% loss. What was his net loss or profit?
From 2011 to 2012, Jack`s annual salary increased by 10 percent and Arnie`s annual salary decreased by 5 percent. If their annual salaries were equal in 2012, then Arnie`s annual salary in 2011 was what percent greater than Jack`s annual salary in 2011 ?

Give your answer to the nearest 0.1 percent.

_____%
A company`s revenue comes from A and B. If its total revenue this year increases by 5% year-on-year and reaches $42,000, while revenue from A increases by 2% year-on-year and reaches $10,200, then by how many percent did its revenue from B increase year-on-year?

Give your answer as percent.

_____%
Based on the information given, which of the following statements must be true?

Indicate all such statements.

During a one-year study, biologists observed the number of fish in a certain pond as well as the percent of the fish that were catfish. At the beginning of the year, there were 300 fish in the pond, of which 15 percent were catfish; and at the end of the year, there were 400 fish in the pond, of which 10 percent were catfish. From the beginning of the year to the end of the year, the number of catfish in the pond
If the average speed of a car is 1104km/h, then what is the speed per second in terms of mile (1 mile approximately equals to 1.6 kilometers)?

Give your answer to the nearest 0.01.
To fill a pool, A needs 12 minutes while B needs 20 minutes. How many minutes will it take if A and B work together?

Give your answer as a decimal.
Student A, B, and C together need 6 hours to finish a task, while A and B together need 8 hours to finish the same task. How many hours will it take for Student C to finish the task alone?
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?
It takes 7 hours to drain off the water tank, while 10 hours to fill it up. For a full water tank, both the water-discharge valve and fill-in valve open for an hour first. Afterwards, the fill-in valve is closed. If so, then how many hours will it still take to drain off the water tank?

Give your answer as a decimal.
To finish a task, A and B could first work 4.5 hours together to complete $$\frac{3}{4}$$ of the task, while A alone work another 6 hours to complete the rest. In this case, how many hours will it take if B alone finish the entire task?
In a driving competition, Jeff and Dennis drove the same course at average speeds of 51 miles per hour and 54 miles per hour, respectively. If it took Jeff 40 minutes to drive the course, how long did it take Dennis?

Give your answer to the nearest 0.1.
By weight, liquid A makes up 8 percent of solution R and 18 percent of solution S. If 3 grams of solution R are mixed with 7 grams of solution S, then liquid A accounts for what percent of the weight of the resulting solution?
A mixture of 12 ounces of vinegar and oil is 40 percent vinegar, where all of the measurements are by weight. How many ounces of oil must be added to the mixture to produce a new mixture that is only 25 percent vinegar?

Give your answer as a decimal.
Among three bottles of sugar water R, S and M, the sugar in R is $$\frac{1}{4}$$ of the sugar in S, while the sugar in S is $$\frac{5}{2}$$ of the sugar in M.

Quantity A

The total weight of sugar in R and S combined

Quantity B

3 times of the weight of sugar in M


At a sale, the cost of each tie was reduced by 20 percent and the cost of each belt was reduced by 30 percent.

Quantity A

The percent reduction on the total cost of 1 tie and 2 belts

Quantity B

25%


At A cornfield, super seed accounts for 17 percent of all seed, while at B cornfield,super seed accounts for 11 percent of all seed. Between cornfield A and B, there aremore seed, in total, in cornfield B than in cornfield A .

Quantity A: The percentage of super seed among all seed in cornfield A and B

Quantity B: 14%

共收录:

25000 +道题目

269本备考书籍

最新提问