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A new machine for harvesting corn will allow rows to be planted only f

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Joined: 28 Mar 2017
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Location: India
Concentration: Finance, Technology
GMAT 1: 730 Q49 V41
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Re: A new machine for harvesting corn will allow rows to be planted only f [#permalink]

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New post 12 Sep 2017, 12:01
Which of the following most logically completes the argument?

A new machine for harvesting corn will allow rows to be planted only fifteen inches apart, instead of the usual thirty inches. Corn planted this closely will produce lower yields per plant. Nevertheless, the new machine will allow corn growers to double their profits per acre because _______.

A. with the closer spacing of the rows, the growing corn plants will quickly form a dense canopy of leaves, which will, by shading the ground, minimize the need for costly weed control and irrigation -Correct. This shows that the costs will actually reduce. From the premise we already know that the produce will increase, so the cost of maintenance should also reduce so that overall we have a profit even though we have a bad yield.

B. with the closer spacing of the rows, corn plants will be forced to grow taller because of increased competition for sunlight from neighboring corn plants -Let them grow taller. We are worried about the cost.

C. with the larger number of plants growing per acre, more fertilizer will be required -This will weaken the answer, since the profits will actually reduce.

D. with the spacing between rows cut by half, the number of plants grown per acre will almost double -We already know this from the premise. This option doesn't tell us that the costs might reduce; since, there is an equal possibility of an increase in the cost of maintenance

E. with the closer spacing of the rows, the acreage on which corn is planted will be utilised much more intensively than it was before, requiring more frequent fallow years in which corn fields are left unplanted -Out of scope
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Re: A new machine for harvesting corn will allow rows to be planted only f [#permalink]

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New post 28 Oct 2017, 04:46
Hi Experts,
I am not convinced with any of the explanations.
A) Doesn't explain why profit will be double, it might increase...but doubling!!!
B) The longer the plant, more could be the yield. Hence substantiating low yield issue. Still doesn't explain doubling of profit.
D) double yield still not sure.
Pls help.
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Magoosh GMAT Instructor
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Posts: 4669
Re: A new machine for harvesting corn will allow rows to be planted only f [#permalink]

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New post 28 Oct 2017, 15:37
ManishKM1 wrote:
Hi Experts,
I am not convinced with any of the explanations.
A) Doesn't explain why profit will be double, it might increase...but doubling!!!
B) The longer the plant, more could be the yield. Hence substantiating low yield issue. Still doesn't explain doubling of profit.
D) double yield still not sure.
Pls help.

Dear ManishKM1,

I'm happy to respond. :-)

The GMAT CR is designed to prepare you for arguments in the real business world. Some GMAT CR arguments are waterproof, leaving us no doubts, and on others, we simply have to go with the most plausible option. It will be the same in the business world: sometimes you really are guaranteed, but many times, you have to take a gut-level guess and move on. Business people who wait for certainty each time go broke.

Here, we simply do not get an answer that guarantees the doubling. Sometimes the GMAT CR will not give you a 100% perfectly clear answer that guarantees the conclusion we want. Sometimes we just have to go with the most plausible answer. You have to have the intellectual agility to make this adjustment from question to question.

We know the plants will be more dense, and we know that each individual plant will have lower yield.

(A) tells us that another, unrelated big cost will drop--it's at least plausible that this could offset

(B) maybe the plants will be taller, but we know each plant will have a lower yield--no increase

(D) we already know this from the prompt: this adds zero new information

Choice (A) is not guaranteed of doubling, but it's the one that most plausibly conveys some kind of increase in profits.

Does all this make sense?
Mike :-)
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Magoosh Test Prep

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Re: A new machine for harvesting corn will allow rows to be planted only f [#permalink]

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New post 28 Oct 2017, 20:11
mikemcgarry wrote:
ManishKM1 wrote:
Hi Experts,
I am not convinced with any of the explanations.
A) Doesn't explain why profit will be double, it might increase...but doubling!!!
B) The longer the plant, more could be the yield. Hence substantiating low yield issue. Still doesn't explain doubling of profit.
D) double yield still not sure.
Pls help.

Dear ManishKM1,

I'm happy to respond. :-)

The GMAT CR is designed to prepare you for arguments in the real business world. Some GMAT CR arguments are waterproof, leaving us no doubts, and on others, we simply have to go with the most plausible option. It will be the same in the business world: sometimes you really are guaranteed, but many times, you have to take a gut-level guess and move on. Business people who wait for certainty each time go broke.

Here, we simply do not get an answer that guarantees the doubling. Sometimes the GMAT CR will not give you a 100% perfectly clear answer that guarantees the conclusion we want. Sometimes we just have to go with the most plausible answer. You have to have the intellectual agility to make this adjustment from question to question.

We know the plants will be more dense, and we know that each individual plant will have lower yield.

(A) tells us that another, unrelated big cost will drop--it's at least plausible that this could offset

(B) maybe the plants will be taller, but we know each plant will have a lower yield--no increase

(D) we already know this from the prompt: this adds zero new information

Choice (A) is not guaranteed of doubling, but it's the one that most plausibly conveys some kind of increase in profits.

Does all this make sense?
Mike :-)


Hi mikemcgarry
Thanks for the explanation. Makes sense. :)
Re: A new machine for harvesting corn will allow rows to be planted only f   [#permalink] 28 Oct 2017, 20:11

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