Explanation

24. For the 60-year period from 1930 to 1990, the per capita income increased by $24,230 – $6,610, or $17,620. The average annual increase is \(\frac{$17620}{60}\) which is approximately \(\frac{$18000}{60}\), or $300. (Since the choices are quite far apart, there is no need for an accurate calculation.) The correct answer is Choice D.

25. The table shows that in 1950 the revenue per student was $1,330. As a percent of the per capita income of $9,540, this is \(\frac{1330}{9540}*100%\), which is approximately 13.9%. Of the given choices, the closest is 14%. The correct answer is Choice C.

26. For most of the years, a rough estimate of \(\frac{1}{5}\) of the per capita income is sufficient for the
comparison to the revenue per student. For the years 1930, 1940, 1950, and 1960, you might estimate of the per capita incomes as $1,300, $1,400, $2,000, and $2,500, respectively, which are clearly greater than the corresponding revenues per student.

For 1980 and 1990, your estimates might be $4,000 and $5,000, which are less than the corresponding revenues per student.

For 1970, you do have to calculate \(\frac{$17,340}{5} = $3468\) which is greater than $3,440.

So the revenue per student was less than of the per capita income for the five years 1930, 1940, 1950, 1960, and 1970. The correct answer is Choice E.
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Answer & explanation to question 26 (last question) is not clear

what is unclear to you ??

How can I help you ??
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Why a rough estimate of 1/5 of the per capita income while per capita income and revenue per student are already given in straight forward way in table?What does it mean in context of given table 'in constant 1998'?

Me too , i am not getting the last question. Why are we doing calculations if it given straight forward... per capita income and revenue per student

please do reply....my gre exam is approaching

Because in the stem of the 26th question, it was missed \(\frac{1}{5}\)

Check it out now. I do think sometimes the bbcode drives us nuts

Apologize
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Ok cool no issues:)

Hi,

May i also ask what does the phrase "in constant 1998" in the header of the table mean?

And why are there no "$" signs in front of the values in the "Per Capita Income" and "Revenue per Student" columns except for Year 1930?

Thanks.

From the Official Guide, the table is correct.

Constant 1998 dollars, I guess the meaning is the dollar per that year in without inflation adjustment.

As for the dollar symbol $, it is only in the first row because is implied for the rest, with no need to repeat it farther..

Regards
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