Curso

At a certain photography store, it costs Pete $1.65 for the first print and $0.85 for each additional print. How many prints of a particular photography can Pete get for $20.00?

A. 19
B. 20
C. 21
D. 22
E. 24

What is the selling price of a radio after its original price is reduced by 20 percent?

(1) The price before the reduction was $120
(2) The price after the reduction is $24 less than the price before the reduction

A. Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
B. Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
C. Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
D. If either statement BY ITSELF is sufficient to answer the question
E. If statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem.

A man bought 10 crates of oranges for $80 total. If he lost 2 of the crates, at what price would he have to sell each of the remaining crates in order to earn a total profit of 25 percent of the total cost?

A. $10.00
B. $12.50
C. $15.00
D. $100.00
E. $120.00

Medical analysts predict that one-third of all people who are infected by a certain biological agent could be expected to be killed for each day that passes during which they have not received an antidote. What fraction of a group of 1,000 people could be expected to be killed if infected and not treated for three full days?

A. 16/81
B. 8/27
C. 2/3
D. 19/27
E. 1/27

Is ∆ABC a right triangle?
(1) The degree measure of angle A is equal to the sum of the degree measures of angles B and C
(2) The degree measure of angle C is 45º

A. Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
B. Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
C. Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
D. If either statement BY ITSELF is sufficient to answer the question.
E. If statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem.

What is the square root of 239,121?

A. 476
B. 489
C. 497
D. 511
E. 524

If 3M / 2N = 0.125, what is the value of N in terms of M?

A. M / 8
B. 8 / M
C. 4 M
D. 8 M
E. 12 M

A box with water has two leaks. The first leak by itself makes the box empty in 9 minutes. The second leak by itself would make the box empty in 6 minutes. How long will it take for both leaks together to make the box empty?

A. 2.2 minutes
B. 3.6 minutes
C. 4.4 minutes
D. 5.5 minutes
E. 10 minutes

During the past week, a local medical clinic tested N individuals for two infections. If 1/3 of those tested had infection A and, of those with infection A, 1/5 also had infection B, how many individuals did not have both infection A and B?

A. N/15
B. 4N/15
C. N/5
D. 14N/15
E. 4N/5

A farm has only ducks and horses. When the owner counted the heads of the stock in the farm, the number totaled up to 200. However, when the number of legs was counted, the number totaled up to 540. How many ducks were there in the farm?

A. 60
B. 70
C. 80
D. 120
E. 130

Three grades of milk are 1 percent, 2 percent and 3 percent fat by volume. If x gallons of the 1 percent grade, y gallons of the 2 percent grade, and z gallons of the 3 percent grade are mixed to give x+y+z gallons of a 1.5 percent grade, what is x in terms of y and z?

A. y + 3z
B. (y +z) / 4
C. 2y + 3z
D. 3y + z
E. 3y + 4.5z

Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows?

(1) The farm has more than twice as many cows as pigs
(2) The farm has more than 12 pigs

A. If you can get the answer from (1) ALONE but not from (2) alone
B. If you can get the answer from (2) ALONE but not from (1) alone
C. If you can get the answer from BOTH (1) and (2) TOGETHER but not from (1) alone or (2) alone
D. If EITHER statement (1) ALONE OR statement (2) ALONE suffices
E. If you CANNOT get the answer from statements (1) and (2) TOGETHER but need even more data

If an item which ordinarily costs $90 is discounted by 25%, what is the new selling price?

A. $22.50
B. $25.00
C. $45.00
D. $67.50
E. $112.50

After installing a powerful pump onto a large gasoline tank, John pumped gasoline out of the tank. Each time John ran the pump, it removed 1/3 of the gas remaining in the tank. Assuming the gas tank was full when John began, what fraction of the total gas in the tank at the beginning was removed if John ran the pump three times?

A. 8/27
B. 1/27
C. 2/3
D. 19/27
E. 27/28

A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity drained away, how many liters of water were drained away?

A. 2
B. 3
C. 4.5
D. 6
E. 9

If Lisa walks t blocks in 3 minutes, how many minutes will it take her to walk s blocks at the same rate?

A. s / (3t)
B. 3s / t
C. 3 / st
D. 3t / s
E. t / 3s

When travelling in a foreign country, one should always «keep their passport with them at all times».

(A) their passport with them at all times
(B) one's passport with them at all times
(C) one's passport close by at all times
(D) one's passport constantly with them
(E) his passport with him constantly

Since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material, revolutionized archaeology and geology.

A) Since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material, revolutionized archaeology and geology.

B) Radiocarbon dating, since its invention in the 1940s, helps scientists in calculating the age of organic material, revolutionizing archaeology and geology.

C) Revolutionizing archaeology and geology since its invention in the 1940s, radiocarbon dating, which helps scientists in calculating the age of organic material.

D) Since its invention in the 1940s, radiocarbon dating has revolutionized archaeology and geology, helping scientists in calculating the age of organic material.

E) Radiocarbon dating, from its invention in the 1940s, has helped scientists in calculating the age of organic material, and in revolutionizing archaeology and geology.