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The average (arithmetic mean) of 87, 95, and 130

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The average (arithmetic mean) of 87, 95, and 130 [#permalink] New post 25 Aug 2018, 00:05
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Question Stats:

94% (00:13) correct 5% (01:01) wrong based on 17 sessions
Quantity A
Quantity B
The average (arithmetic mean) of 87, 95, and 130
The average (arithmetic mean) of 88, 95, and 129


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.

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[Reveal] Spoiler: OA

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Re: The average (arithmetic mean) of 87, 95, and 130 [#permalink] New post 25 Aug 2018, 10:50
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Carcass wrote:
Quantity A
Quantity B
The average (arithmetic mean) of 87, 95, and 130
The average (arithmetic mean) of 88, 95, and 129


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.

Kudos for R.A.E


87 + 95 + 130 = 88 + 95 + 129 = 312

\(Average = \frac{Total}{3}\)

Therefore, the there two quantities are equal(Option C)
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Re: The average (arithmetic mean) of 87, 95, and 130 [#permalink] New post 03 Apr 2019, 04:30
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Carcass wrote:
Quantity A
Quantity B
The average (arithmetic mean) of 87, 95, and 130
The average (arithmetic mean) of 88, 95, and 129


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.

Kudos for R.A.E


Here,
No calculation is required,

Compare the values in QTY A i.e. 87 , 95 and 130

QTY B = 88 , 95 , 129

As it can be seen that 88 is 1 up to 87 and 129 is one down 130. The middle term 95 remains the same.

Hence both QTY A and QTY B will have same AM
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Re: The average (arithmetic mean) of 87, 95, and 130   [#permalink] 03 Apr 2019, 04:30
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The average (arithmetic mean) of 87, 95, and 130

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