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# A group of 30 employees of Cadre A has a mean age of 27. A d

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A group of 30 employees of Cadre A has a mean age of 27. A d [#permalink]  11 Apr 2019, 15:58
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A group of 30 employees of Cadre A has a mean age of 27. A different group of 70 employees of Cadre B has a mean age of 23. What is the mean age of the employees of the two groups together?

(A) 23

(B) 24.2

(C) 25

(D) 26.8

(E) 27
[Reveal] Spoiler: OA

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A group of 30 employees of Cadre A has a mean age of 27. A d   [#permalink] 11 Apr 2019, 15:58
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