Compare Quantity A and Quantity B, using additional information centered above t

游客2024-01-12  23

问题 Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:
(A)Quantity A is greater.
(B)Quantity B is greater.
(C)The two quantities are equal.
(D)The relationship cannot be determined from the information given.
A symbol that appears more than once in a question has the same meaning throughout the question. [br]

选项

答案 D

解析 Of the 20 oldest employees, 18 are in the 55-64 age-group, and 21 are in the 45-54 age-group. Therefore the youngest of the 20 employees is in the 45-54 age-group, and the oldest is in the 55-64 age-group. The youngest of the 20 employees could be 45 years old and the oldest could be 64 years old. In this case, the range of their ages would be 64 - 45, or 19 years.
On the other hand, the youngest could be 54 years old and the oldest could be 55 years old, so the range of their ages would be 1 year. Because there are cases where the range is greater than 11 years and cases where it is less than 11 years, the correct answer is Choice D.
This explanation uses the following strategies.
Strategy 11: Divide into Cases
Strategy 13: Determine Whether a Conclusion Follows from the Information Given
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