Mathematics
NECO 2001
The mean age of 12 boys involved survey is 19 years, 3 months. lf the-age of one of the boys is 22 years, what is the mean age of the other-boys?
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A.
10.5 years
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B.
19.0 years
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C.
35.4 years
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D.
264.0 years
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E.
423.5 years
Correct Answer: Option B
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