GWD-13-Q38:

Frobisher, a sixteenth-century English explorer, had soil samples from Canada’s Kodlunarn
                        Island examined for gold content.  Because high gold content was reported, Elizabeth I funded two mining expeditions.  Neither expedition found any gold there.  Modern analysis of the island’s soil indicates a very low gold content.  Thus the methods used to determine the gold content of Frobisher’s samples must have been inaccurate.

Which of the following is an assumption on which the argument depends?

1. The gold content of the soil on Kodlunarn
                               Island is much lower today than it was in the sixteenth century.

2. The two mining expeditions funded by Elizabeth I did not mine the same part of Kodlunarn
                               Island.

3. The methods used to assess gold content of the soil samples provided by Frobisher were different from those generally used in the sixteenth century.

4. Frobisher did not have soil samples from any other Canadian island examined for gold content.

5. Gold was not added to the soil samples collected by Frobisher before the samples were examined.E?

1.         GWD-17-Q30

In a study conducted in Pennsylvania, servers in various restaurants wrote “Thank you” on randomly selected bills before presenting the bills to their customers.  Tips on these bills were an average of three percentage points higher than tips on bills without the message.  Therefore, if servers in Pennsylvania regularly wrote “Thank you” on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.

Which of the following is an assumption on which the argument relies?

1. The “Thank you” messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.
2. Regularly seeing “Thank you” written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.
3. The written “Thank you” reminds restaurant patrons that tips constitute a significant part of the income of many food servers.
4. The rate at which people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.
5. Virtually all patrons of the Pennsylvania restaurants in the study who were given a bill with “Thank you” written on it left a larger tip than they otherwise would have.B     

The answer is B. but I think it is E.

2.         GWD-25-Q2

In two months, the legal minimum wage in the country of Kirlandia will increase

from five Kirlandic dollars(KD5.00) Per hour to KD5.50 per hour. Opponents of

this increase have argued that the resulting rise in wages will drive the inflation

rate up. In fact its impact on wages will probably be negligible, since only a

very small proportion of all Kirfandic workers are currently receiving less than

KD5.50 per hour.

Which of the following, if true, most seriously weakens the argument?

A. Most people in kirlandia who are currently earning the minimum wage have

  been employed at their current jobs for less than a year.

B. Some firms in Kirlandia have paid workers considerably less than KD5.00

  per hour, in violation of kirlandic employment regulations.

C. Many businesses hire trainees at or near the minimum wage but must

  reward trained workers by keeping their paylevels above the pay level

  of trainees.

D. The greatest growth in Kirlandia’s economy in recent years has been in

   those sectors where workers earn wages that tend to be much higher

   than the minimum wage.

E The current minimum wage is insufficient for a worker holding only one job 

to earn enough to support a family ,even when working full time at that job.

D?

3.         GWD-29-Q35

In Patton City, days are categorized as having heavy rainfall (more than two inches), moderate rainfall (more than one inch, but no more than two inches), light rainfall (at least a trace, but no more than one inch), or no rainfall.  In 1990, there were fewer days with light rainfall than in 1910 and fewer with moderate rainfall, yet total rainfall for the year was 20 percent higher in 1990 than in 1910.

If the statements above are true, then it is also possible that in Patton
                City

1. the number of days with heavy rainfall was lower in 1990 than in 1910
2. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910
3. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910
4. the total number of inches of rain that fell on days with moderate rainfall in 1990 was more than twice what it had been in 1910
5. the average amount of rainfall per month was lower in 1990 than in 1910

C?