Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.

(A) Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals
(B) If used repeatedly in the same place, one reason that certain pesticides can become ineffective is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals
(C) If used repeatedly in the same place, one reason certain pesticides can become ineffective is suggested by the finding that much larger populations of pesticide-degrading microbes are found in soils with a relatively long history of pesticide use than those that are free of such chemicals
(D) The finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals is suggestive of one reason, if used repeatedly in the same place, certain pesticides can become ineffective
(E) The finding of much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in those that are free of such chemicals suggests one reason certain pesticides can become ineffective if used repeatedly in the same placedren are no more likely than adults to have immunity to a particular flu virus if they have never lived through a previous epidemic of the same virus.

Question Discussion & Explanation

Correct Answer - A - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

Quant

If is a positive integer, is an even number?

(1) is an even number

(2)

Question Discussion & Explanation

Correct Answer - C - (click and drag your mouse to see the answer)

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The post Question of the Day (June 28) first appeared on GMAT Club Blog.

Is the product of three integers , , and even?

(1) is odd

(2) is odd

Question Discussion & Explanation

Correct Answer - D - (click and drag your mouse to see the answer)

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Verbal

From 2000 to 2010, beverage containers accounted for a steadily decreasing percentage of the total weight of domestic garbage in Brazil. The increasingly widespread practice of recycling aluminum and plastic was responsible for most of this decline. However, although aluminum recycling was more widely practiced in this period than plastic recycling, the total weight of plastic bottles in Brazil’s domestic garbage declined by a greater percentage during this time than the total weight of aluminum cans in Brazil’s domestic garbage.

Which of the following, if true in Brazil from 2000 to 2010, most helps to account for the apparent discrepancy?

(A) Consumers increasingly favored glass beverage containers over plastic ones.
(B) Plastic bottles were significantly heavier than aluminum cans of comparable size.
(C) Most recycled aluminum cans were beverage containers, but a significant fraction of recycled plastic bottles were not beverage containers.
(D) The total weight of plastic bottles purchased by Brazilians increased at a slightly faster rate than did the total weight of aluminum cans purchased by Brazilians.
(E) In Brazil, the total number of plastic bottles recycled between 2000 and 2010 was less than the total number of aluminum cans recycled during that time.

Question Discussion & Explanation

Correct Answer - A - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

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The post Question of the Day (June 27) first appeared on GMAT Club Blog.

Building on civilizations that preceded them in coastal Peru, the Mochica developed their own elaborate society, based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting other wild and domestic resources.

(A) based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting
(B) based on the cultivation of such crops as corn and beans, the harvesting of fish and seafood, and the exploitation of
(C) and basing it on the cultivation of crops like corn and beans, harvesting fish and seafood, and the exploiting of
(D) and they based it on their cultivation of crops such as corn and beans, the harvest of fish and seafood, and exploiting
(E) and they based it on their cultivating such crops like corn and beans, their harvest of fish and shellfish, and they exploited

Question Discussion & Explanation

Correct Answer - B - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

Quant

What number between 1 and 10 yields the same result when divided by 5 and when reduced by 5?

A.
B. 5.125
C.
D.
E.

Question Discussion & Explanation

Correct Answer - E - (click and drag your mouse to see the answer)

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The post Question of the Day (June 26) first appeared on GMAT Club Blog.

If , which of the following is a divisor of ?

A. 15
B. 14
C. 13
D. 7
E. 2

Question Discussion & Explanation

Correct Answer - C - (click and drag your mouse to see the answer)

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Verbal

Bluegrass musician Bill Monroe, whose repertory, views on musical collaboration, and vocal style were influential on generations of bluegrass artists, was also an inspiration to many musicians, that included Elvis Presley and Jerry Garcia, whose music differed significantly from his own.

(A) were influential on generations of bluegrass artists, was also an inspiration to many musicians, that included Elvis Presley and Jerry Garcia, whose music differed significantly from
(B) influenced generations of bluegrass artists, also inspired many musicians, including Elvis Presley and Jerry Garcia, whose music differed significantly from
(C) was influential to generations of bluegrass artists, was also inspirational to many musicians, that included Elvis Presley and Jerry Garcia, whose music was different significantly in comparison to
(D) was influential to generations of bluegrass artists, also inspired many musicians, who included Elvis Presley and Jerry Garcia, the music of whom differed significantly when compared to
(E) were an influence on generations of bluegrass artists, was also an inspiration to many musicians, including Elvis Presley and Jerry Garcia, whose music was significantly different from that of

Question Discussion & Explanation

Correct Answer - B - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

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The post Question of the Day (June 25) first appeared on GMAT Club Blog.

Conventional wisdom suggests vaccinating elderly people first in flu season, because they are at greatest risk of dying if they contract the virus. This year’s flu virus poses particular risk to elderly people and almost none at all to younger people, particularly children. Nevertheless, health professionals are recommending vaccinating children first against the virus rather than elderly people.

Which of the following, if true, provides the strongest reason for the health professionals’ recommendation?

A. Children are vulnerable to dangerous infections when their immune systems are severely weakened by other diseases.
B. Children are particularly unconcerned with hygiene and therefore are the group most responsible for spreading the flu virus to others.
C. The vaccinations received last year will confer no immunity to this year’s flu virus.
D. Children who catch one strain of the flu virus and then recover are likely to develop immunity to at least some strains with which they have not yet come in contact.
E. Children are no more likely than adults to have immunity to a particular flu virus if they have never lived through a previous epidemic of the same virus.

Question Discussion & Explanation

Correct Answer - B - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

Quant

Is ?

(1)

(2)

Question Discussion & Explanation

Correct Answer - B - (click and drag your mouse to see the answer)

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The post Question of the Day (June 24) first appeared on GMAT Club Blog.

How many distinct roots does the equation have?

A. 0
B. 1
C. 2
D. 3
E. 4

Question Discussion & Explanation

Correct Answer - C - (click and drag your mouse to see the answer)

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Verbal

Community activist: If Morganville wants to keep its central shopping district healthy, it should prevent the opening of a huge SaveAll discount department store on the outskirts of Morganville. Records from other small towns show that whenever SaveAll has opened a store outside the central shopping district of a small town, within five years the town has experienced the bankruptcies of more than a quarter of the stores in the shopping district.

The answer to which of the following would be most useful for evaluating the community activist’s reasoning?

A. Have community activists in other towns successfully campaigned against the opening of a SaveAll store on the outskirts of their towns?
B. Do a large percentage of the residents of Morganville currently do almost all of their shopping at stores in Morganville?
C. In towns with healthy central shopping districts, what proportion of the stores in those districts suffer bankruptcy during a typical five-year period?
D. What proportion of the employees at the SaveAll store on the outskirts of Morganville will be drawn form Morganville?
E. Do newly opened SaveAll stores ever lose money during their first five years of operation?

Question Discussion & Explanation

Correct Answer - C - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

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The post Question of the Day (June 21) first appeared on GMAT Club Blog.

Before its bankruptcy in 2008, Goldman Sachs Inc. financed Crystal Technologies, a tech company, as a venture capital investment and they would withdrew all their funding only after a long and comprehensive analysis of the bankrupt tech company’s account books. 

(A) Before its bankruptcy in 2008, Goldman Sachs Inc. financed Crystal Technologies, a tech company, as a venture capital investment and they would withdraw all its funding
(B) Before its bankruptcy in 2008, Goldman Sachs Inc. had financed Crystal Technologies, a tech company, as a venture capital investment and withdrew all its funding
(C) Before its bankruptcy in 2008, Crystal Technologies, a tech company, had been financed by Goldman Sachs Inc. as a venture capital investment and the investor withdrew all its funding
(D) Before its bankruptcy in 2008, Crystal Technologies, a tech company, was financed as a venture capital investment by Goldman Sachs Inc., which withdrew all its funding
(E) Before its bankruptcy in 2008, Crystal Technologies, a tech company, was a venture capital investment of Goldman Sachs Inc. , who withdrew all its funding

Question Discussion & Explanation

Correct Answer - D - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

Quant

What is the value of integer ?

(1)

(2)

Question Discussion & Explanation

Correct Answer - A - (click and drag your mouse to see the answer)

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The post Question of the Day (June 20) first appeared on GMAT Club Blog.

The average (arithmetic mean) of 4 different positive integers is 125 and the largest of these integers is 150, what is the least possible value of the smallest of the 4 integers?

A. 1
B. 2
C. 12
D. 53
E. 100

Question Discussion & Explanation

Correct Answer - D - (click and drag your mouse to see the answer)

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Verbal

Because an oversupply of computer chips has sent prices plunging, the manufacturer has announced that it will cut production by closing its factories for two days a month. 

(A) Because an oversupply of computer chips has sent prices plunging 
(B) Because of plunging prices for computer chips, which is due to an oversupply 
(C) Because computer chip prices have been sent plunging, which resulted from an oversupply 
(D) Due to plunging computer chip prices from an oversupply 
(E) Due to an oversupply, with the result that computer chip prices have been sent plunging

Question Discussion & Explanation

Correct Answer - A - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

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The post Question of the Day (June 19) first appeared on GMAT Club Blog.

Commemorative plaques cast from brass are a characteristic art form of the Benin culture of West Africa. Some scholars, noting that the oldest surviving plaques date to the 1400s, hypothesize that brass-casting techniques were introduced by the Portuguese, who came to Benin in 1485 A.D. But Portuguese records of that expedition mention cast-brass jewelry sent to Benin’s king from neighboring Ife. So it is unlikely that Benin’s knowledge of brass casting derived from the Portuguese.

Which of the following, if true, most strengthens the argument?

(A) The Portuguese records do not indicate whether their expedition of 1485 included metalworkers.
(B) The Portuguese had no contact with Ife until the 1500s.
(C) In the 1400s the Portuguese did not use cast brass for commemorative plaques.
(D) As early as 1500 A.D., Benin artists were making brass plaques incorporating depictions of Europeans.
(E) Copper, which is required for making brass, can be found throughout Benin territory.

Question Discussion & Explanation

Correct Answer - B - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

Quant

If two lines have slopes and , respectively, are they perpendicular?

(1)

(2)

Question Discussion & Explanation

Correct Answer - A - (click and drag your mouse to see the answer)

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The post Question of the Day (June 18) first appeared on GMAT Club Blog.

Is ?

(1)

(2) and are positive integers

Question Discussion & Explanation

Correct Answer - C - (click and drag your mouse to see the answer)

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Verbal

Based on accounts of various ancient writers, scholars have painted a sketchy picture of the activities of an all-female cult that, perhaps as early as the sixth century BC, worshipped a goddess known as Bona Dea, "the good goddess".

(A) Based on accounts of various ancient writers
(B) Basing it on various ancient writers' accounts
(C) With accounts of various ancient writers used for a basis
(D) By the account of various ancient writers they used
(E) Using accounts of various ancient writers

Question Discussion & Explanation

Correct Answer - E - (click and drag your mouse to see the answer)

Bonus RC Question of the Day

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The post Question of the Day (June 17) first appeared on GMAT Club Blog.