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比率、比例与百分比   题数：173
What is the total number of coins that Bert and Claire have?(1) Bert has 50 percent more coins than Claire.(2) The total number of coins that Bert and Claire have is between 21 and 28.
At a certain theater, the cost of each adult's ticket is $5 and the cost of each child's ticket is $2. What was the average (arithmetic mean) cost of all the adults' and children's tickets sold at the theater yesterday?(1) Yesterday the ratio of the number of children's tickets sold at the theater to the number of adults' tickets sold at the theater was 3 to 2.(2) Yesterday 80 adults' tickets were sold at the theater.
Linda, Robert, and Pat packed a certain number of boxes with books. What is the ratio of the number of boxes of books thatRobert packed to the number of boxes of books that Pat packed?(1) Linda packed 30 percent of the total number of boxes of books.(2) Robert packed 10 more boxes of books than Pat did.
【OG20-P289-416题】Last year, if Arturo spent a total of $12,000 on his mortgage payments, real estate taxes, and home insurance, how much did he spend on his real estate taxes?(1) Last year, the total amount that Arturo spent on his real estate taxes and home insurance was 33A percent of the amount that he spent on his mortgage payments.(2) Last year, the amount that Arturo spent on his real estate taxes was 20 percent of the total amount he spent on his mortgage payments and home insurance.
How many of the 42 people in a group are employed students?(1) 29 of the 42 people are employed. (2) 24 of the 42 people are students.
What was a certain company's revenue last year? (1) Last year the company's gross profit was $4,100.(2) Last year the company's revenue was 50 percent greater than its expenses.
Henry purchased 3 items during a sale. He received a 20 percent discount off the regular price of the most expensive item and a 10 percent discount off the regular price of each of the other 2 items. Was the total amount of the 3 discounts greater than 15 percent of the sum of the regular prices of the 3 items? (1) The regular price of the most expensive item was $50, and the regular price of the next most expensive item was $20. (2) The regular price of the least expensive item was $15.
The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998. Was the annual rent collected by the corporation from the building more in 1999 than in 1997?(1) x > y(2) xy/100< x-y
A manufacturer produced x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If the manufacturer produced 1,000 video cameras in 1993, how many video cameras did the manufacturer produce in 1995 ?(1) xy = 20(2) x + y + xy100 ​= 9.2
In 1984 a certain union had a total of 15,600 members. Was the percent increase in the total number of members in the union from 1984 to 1985 greater than that from 1985 to 1986 ? (1) From 1984 to 1985 the total number of members in the union increased by 781, and from 1985 to 1986 the total number of members in the union again increased by 781. (2) In 1985 the union had a total of 16,381 members, and in 1986 the union had a total of 17,162 members.
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