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Bunuel
for statement 2 can you suggest a quick way to solve this or identify the change.

Bunuel
Official Solution:
Bunuel

The table below summarizes information in several categories about the different flights at a major international airport.

YearDestinationCharterCargoCommuterNon-RevenueTotal
2005Domestic2048,19359,9731,728230,242
2005International1,26614,3805,2091,324119,706
2006Domestic2177,41964,9711,180250,413
2006International1,02313,4175,8141,269128,014
2007Domestic2157,58691,6001,297302,958
2007International1,82313,3116,2311,198140,796
2008Domestic506,82083,4281,605288,025
2008International48810,9267,9641,203150,366
2009Domestic305,72381,3021,398272,804
2009International1717,8397,503525142,482
2010Domestic395,94268,7261,184252,445
2010International1889,3877,714526144,525


For each of the following statements, select True if the statement can be verified as true based on the information provided. Otherwise, select False.


TrueFalse
From 2005 to 2010, there was a direct correlation between the number of domestic non-revenue flights and the total number of domestic flights.
The largest percentage decrease in flights for any category from 2005 to 2010 is greater than the largest percentage increase in flights for any category from 2005 to 2010.
In 2005, international cargo flights represented more than 10% of the total number of international and domestic flights combined.


Statement 1

A direct correlation means that as one variable increases, the other also increases, or as one decreases, the other decreases—they move in the same direction. Between 2005 and 2010, the number of domestic non-revenue flights followed the pattern: down, up, up, down, down. During the same period, the total number of domestic flights followed a different pattern: up, up, down, down, down. Clearly, there is no direct correlation between these numbers. Therefore, this statement is False.

Statement 2

The greatest decrease occurred in International Charter flights, which dropped from 1,266 to 188—a decrease of approximately 85%. The greatest increase occurred in International Commuter flights, which rose from 5,209 to 7,714—an increase of approximately 50%. Therefore, this statement is True.

Statement 3

In 2005, the number of international cargo flights was 14,380, while the combined total of all international and domestic flights was 119,706 + 230,242 ≈ 350,000. Clearly, 14,380 is less than 10% of 350,000. Therefore, this statement is False.


Correct answer:

From 2005 to 2010, there was a direct correlation between the number of domestic non-revenue flights and the total number of domestic flights. "False"

The largest percentage decrease in flights for any category from 2005 to 2010 is greater than the largest percentage increase in flights for any category from 2005 to 2010. "True"

In 2005, international cargo flights represented more than 10% of the total number of international and domestic flights combined. "False"

You should basically compare red with red and blue with blue in the image below. A quick scanning should help you spot where the greatest decrease and the greatest increase happen. Not much actual calculation is needed, just a methodical step-by-step approach and good number sense.


Attachment:
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GMAT-Club-Forum-st6kzqel.png [ 119.17 KiB | Viewed 5920 times ]
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I have revised the question, solution, and formatting by adding more details to enhance clarity
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