大全-5-19

liaokangyu · 发表于 2004-9-1 01:10:00

Recent estimates predict that between 1982 and 1995 the greatest increase in the number of people employed will be in the category of low-paying service occupations. This category, however, will not increase its share of total employment, whereas the category of high-paying service occupations will increase its share.
If the estimates above are accurate, which of the following conclusions can be drawn?
(A) In 1982 more people were working in low-paying service occupations than were working in high-paying service occupations.
(B) In 1995 more people will be working in high-paying service occupations than will be working in low-paying service occupations.
(C) Nonservice occupations will account for the same share of total employment in 1995 as in 1982.
(D) Many of the people who were working in low-paying service occupations in 1982 will be working in high-paying service occupations by 1995.
(E) The rate of growth for low-paying service occupations will be greater than the overall rate of employment growth between 1982 and 1995.
我選D，而答案是A，煩請各位先進協助釋疑…

joe11 · 发表于 2004-9-1 09:16:00

This is a numeric problem.

Establish some facts:

From 1982 to 1985,

number of people into Low-pay service jobs > number of people into High-pay service jobs

But,

the % of people in Low-pay service jobs < the % of people in High-pay service jobs

ie. number of ppl into Low-pay service jobs/ total employment < number of ppl into High-pay service jobs/Total employment

total employment = number of ppl into Low Low-pay service jobs + number of ppl into High-pay service jobs + constant (irrelevant)

Therefore, the possibilities are:

Only when more people were working in low-paying service occupations than were working in high-paying service occupations in 1982 can we establish the equation above.

大全-5-19

大全-5-19

所属分类: GMAT考试

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