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In a certain club, the average (arithmetic mean) of the 35 m

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In a certain club, the average (arithmetic mean) of the 35 m [#permalink] New post 27 Nov 2019, 11:11
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In a certain club, the average (arithmetic mean) of the 35 males is 24.2 years and the average age of the 25 females is 27.6 years.


Quantity A
Quantity B
The average age of all of the people in the club
25.9



A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.

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[Reveal] Spoiler: OA

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Re: In a certain club, the average (arithmetic mean) of the 35 m [#permalink] New post 28 Nov 2019, 07:32
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Average = (35 X 24.2 + 25 X 27.6) / (35+25)
=25.6

So 25.9 is bigger than 25.6. So B is the answer
Re: In a certain club, the average (arithmetic mean) of the 35 m   [#permalink] 28 Nov 2019, 07:32
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In a certain club, the average (arithmetic mean) of the 35 m

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