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In response to mounting pubic concern, an airplane [#permalink]
15 Jul 2006, 01:03
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In response to mounting pubic concern, an airplane manufacturer implemented a program with the well-publicized goal of reducing by half the total yearly amount of hazardous waste generated by its passenger-jet division. When the program began in 1994, the division's hazardous waste output was 90 pounds per production worker; last year it was 40 pounds per production worker. Clearly, therefore, charges that the manufacturer's program has not met its goal are false.
Which of the following is an assumption on which the argument depends?
A. The amount of nonhazardous waste generated each year by the passenger-jet
division has not increased significantly since 1994.
B. At least as many passenger jets were produced by the division last year as had been produced in 1994.
C. Since 1994, other divisions in the company have achieved reductions in hazardous waste output that are at least equal to that achieved in the passenger-jet division.
D. The average number of weekly hours per production worker in the passenger-jet division was not significantly greater last year than it was in 1994.
E. The number of production workers assigned to the passenger-jet division was not significantly less in 1994 than it was last year.
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B also presents a strong assumption.
After all its the production of passenger jets that produce the waste. If the division produced less passenger jets that in 1994 the amount of waste produced will also be less.
when I see a question like this I need to assume that whatever the parameters were in the beginning of comparison, should be the same at the end... I was looking exactly for clarification of number of workers and found it in E
This is not easy question. I think B is correct. E is a trap. The article already said that the mazardous waste reduced to 40 pounds per production worker. therefore, it is already stated in the article that the number of production worker is the same both in 1994 and last year.
why B? Please refer to the reply above. someone explained it.
The argument is about the total hazardous waste generated by the airline manufacturer. The stat given as proof of reduction is waste per prodn worker.
Now, number of airplanes produced does not depend on nbr of workers. Neither do we have any stats regarding waste generated per plane. Hence B is very clearly out.
Assume there were 50 workers in 1994, and 110 last year - calculate total waste generated. Answer is evident. E.
Uh uh. I know what you're thinking. "Is the answer A, B, C, D or E?" Well to tell you the truth in all this excitement I kinda lost track myself. But you've gotta ask yourself one question: "Do I feel lucky?" Well, do ya, punk?
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