GRE（QUANTITATIVE）综合模拟试卷19 - 众享搜题网

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[*] Which of the following is closest to the mean of the prices of the 700 homes sold in 2012 and 2013 combined? $265,000 $270,000 $275,000 $280,000 $285,000

[*] From 1930 to 1990, approximately what was the average increase per year in per capita income? $150 $200 $250 $300 $350

At the rates shown in the graph, which of the following is closest to the number of hours of work time that was required to pay for 20 kilograms of sugar in 1919 ? (1 kilogram equals 2.2 pounds, rounded to the nearest 0.1 pound.) 11 14 20 31 53

Eight hours of work time paid for approximately how many more dozen eggs in 1997 than it did in 1919 ? 50 70 90 110 130

By approximately what percent did the median price of homes sold in County T decrease from 2011 to 2012 ? 10% 15% 25% 33% 50%

Based on the information given, which of the following statements about the sum of the prices of all the homes sold in a given year must be true? Indicate all such statements. The sum of the prices for 2010 was greater than the sum for 2009. The sum of the prices for 2010 was greater than the sum for 2011. The sum of the prices for 2009 was greater than the sum for 2011.

County T collected a tax equal to 3 percent of the price of each home sold in the county in 2009. Approximately how much did County T collect in taxes from all homes sold in 2009 ? $38,000 $260,000 $380,000 $2,600,000 $3,800,000

In 1950 the revenue per student was approximately what percent of the per capita income? 8% 11% 14% 17% 20%

For how many of the seven years shown was the revenue per student less than 1/5 of the per capita income for the year? One Two Three Four Five

What percent of 150 is 12.9?

15 is 60% of what number?

An investment in a mutual fund increased by 12% in a single day. If the value of the investment before the increase was $1,300, what was the value after the increase?

The monthly enrollment at a preschool decreased by 8% during one month and increased by 6% during the next month. What was the cumulative percent change for the two months?

Evaluate the following. (a)15-(6-4)(-2) (b)(2-17)+ 5 (c)(60+12)-(-7+ 4) (d)(3)⁴-(-2)³ (e)(-5)(-3)- 15 (f)(-2)⁴(15-18)⁴ (g)(20 ÷ 5)²(-2 + 6)³ (h)(-85)(0)-(-17)(3)

Evaluate the following. [*]

Which of the integers 312, 98, 112, and 144 are divisible by 8 ?

(a)What is the prime factorization of 372?(b)What are the positive divisors of 372?

(a)What are the prime divisors of 100?(b)What are the prime divisors of 144?

Which of the integers 2, 9,19, 29, 30, 37, 45, 49, 51, 83, 90, and 91 are prime numbers?

What is the prime factorization of 585 ?

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