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17 Nov 2022, 12:32
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C
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Difficulty:
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Question Stats:
89% (01:44) correct
11%
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wrong
based on 61
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A demographic study describes a group of corporation executives and nonexecutives having an average (arithmetic mean) age of 42 years. If the executives in the group average 40 years of age and the nonexecutives average 45 years of age, what is the ratio of the number of executives to the number of non executives in the group?
A. 2 to 1
B. 3 to 1
C. 3 to 2
D. 4 to 3
E. 5 to 3
A. 2 to 1
B. 3 to 1
C. 3 to 2
D. 4 to 3
E. 5 to 3
17 Nov 2022, 13:34
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We can use the teeter totter method (weighted average) to find the ratio of executives to the non executives. A detailed working is attached.
Option C
Option C
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