OG 13 #9

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by Mo2men » Fri May 10, 2019 7:35 am

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GMATGuruNY wrote:
hey_thr67 wrote:In 1979 lack of rain reduced India's rice production to about 41 million tons, nearly 25 percent less than those of the 1978 harvest.

A: less than those of the 1978 harvest.
B: less than the 1978 harvest.
C: less than 1978.
D: fewer than 1978.
E: less than that of India's 1978 harvest.

[spoiler]OA is B. Why not A ?[/spoiler]
In E, that seems to refer to production. Thus, that of India's 1978 harvest implies the PRODUCTION of India's HARVEST - an error of redundancy, since the PRODUCTION and the HARVEST are the same thing. Eliminate E.

C and D each seem to compare the rice production to 1978. The PRODUCTION cannot be compared to a YEAR. Eliminate C and D.

In A, those seems to refer to tons, implying that the TONS of the rice production in 1979 are being compared to the TONS of the 1978 harvest. Not the intended meaning. The intention here is to compare the PRODUCTION in one year to the HARVEST in the other. Eliminate A.

The correct answer is B.

Consider the following analogy.
INCORRECT: This year John's salary increased to 50,000 dollars, 25% more than those of his salary last year.
This sentence is nonsense: the intention clearly is not to compare the DOLLARS of one salary to the DOLLARS of the other but rather to compare one SALARY to the other.
dear GMATGuru,

As you explained before, ''ER adjective' is used with value or numerical data point like the following OG:
Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than in any previous election.

Why 'production' is not treated as value too like the example above so that we use 'greater' instead of 'less'?

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rice production

by GMATGuruNY » Sat May 11, 2019 2:39 am

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Mo2men wrote:As you explained before, ''ER adjective' is used with value or numerical data point like the following OG:
Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than in any previous election.
Here, greater serves to modify not costs but PROPORTION.
Conveyed meaning:
The PROPORTION in the presidential campaign of 1992 was greater than the PROPORTION in any previous election.
Why 'production' is not treated as value too like the example above so that we use 'greater' instead of 'less'?
When comparing elements with regard to WEIGHT, we generally use not lower but LESS.
Adam weighs LESS than Bob.
Adam weighs 180 pounds, 30 pounds LESS than Bob
.
The SC above conveys the following meaning:
The 1979 rice production weighed LESS than the 1978 harvest.
Last edited by GMATGuruNY on Sat May 11, 2019 1:19 pm, edited 2 times in total.
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by Mo2men » Sat May 11, 2019 5:04 am

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GMATGuruNY wrote: When comparing elements with regard to WEIGHT, we generally use not lower but LESS.
Adam weighs LESS than Bob.
Adam weighs 180 pounds, 30 pounds LESS than Bob
.
The SC above conveys the following meaning:
The 1979 rice production weighed LESS than the 1978 harvest.
Thanks GMATGuru for you reply.

I'm confused a bit here

1- Can I say that When we compare numbers, and numbers decrease, we use "less."? For example

The population of Ghana is less than that of New York.
The cost of a night at the Hyatt is less than total cost of a day at Hilton.
The melting point of zinc is less than that of copper.

2- If the above are true, so why is it different than It appears in the following Official question:
Most of the country's biggest daily newspapers had lower circulation in the six months from October 1995 through March 1996 than in a similar period.

According to your explanation, circulation so, why not taking less? Based on answer, how to differentiate between using 'less' and '...ER adjective?

Thanks

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by GMATGuruNY » Sun May 12, 2019 2:52 am

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Mo2men wrote:According to your explanation, circulation so, why not taking less? Based on answer, how to differentiate between using 'less' and '...ER adjective?

Thanks
When a statistic decreases in value, we use lower rather than less.
Incorrect:
The temperature was less in the second experiment than in the first.
Correct:
The temperature was lower in the second experiment than in the first.

Most of the country's biggest daily newspapers had lower circulation in the six months from October 1995 through March 1996 than in a similar period.
Conveyed meaning:
Here, there was a DECREASE IN THE NUMBER of newspapers in circulation.
Since a statistic -- the number of newspapers in circulation -- decreased in value, the OA correctly states that this statistic was LOWER.
The population of Ghana is less than that of New York.
The melting point of zinc is less than that of copper.
Outside the GMAT, you might see comparisons like the two above.
BUT:
To my knowledge, no official SC has ever stated that one population or temperature is less than another.
Incorrect:
Ghana has less population than New York.
Correct:
Ghana has a SMALLER population than New York.
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by vietnam47 » Wed Aug 07, 2019 11:47 pm

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look at choice e
I am non native , and,so , I have difficulty realizing that "production'" and "harvest" are the same meaning. in face, I check the dictionary for their meaning.

but we do not need to know they are the same meaning to eliminate choice e.

"that" refers to "production". if we use "that of" we need to add new information after "of". "india's" is repeated and this is redundant clearly. if we do not use "that of" , we can use another word with similar meaning like "harvest".

so, "india's" is redundant.

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by vietnam47 » Thu Aug 08, 2019 12:37 am

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experts, pls, explain the difference between " one/ones" and "that/those".
I like blue pens but my friend like red ones

thank you.