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If the average of 2x and 4x is 12, then x =

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If the average of 2x and 4x is 12, then x = [#permalink]

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New post 21 May 2017, 12:34
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (00:16) correct 12% (00:04) wrong based on 52 sessions

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Concentration: Operations, Leadership
GMAT 1: 600 Q44 V28
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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 21 May 2017, 13:13
(2x + 4x / 2 )= 12

6x/2 = 12

3x = 12

x = 4

Hence answer is option D.
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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 21 May 2017, 18:18
Bunuel wrote:
If the average of 2x and 4x is 12, then x =

(A) 1
(B) 2
(C) 3
(D) 4
(E) 24


\(\frac{2x + 4x}{2}\) = 12
6x = 24
x = 4
Answer D...

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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 22 May 2017, 09:35
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Bunuel wrote:
If the average of 2x and 4x is 12, then x =

(A) 1
(B) 2
(C) 3
(D) 4
(E) 24


\(\frac{2x + 4x}{2} = 12\)

Or, \(3x = 12\)

Or, \(x = 4\)

Hence, answer will be (D) 4
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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 22 May 2017, 09:39
Bunuel wrote:
If the average of 2x and 4x is 12, then x =

(A) 1
(B) 2
(C) 3
(D) 4
(E) 24


Avarage = (2x+4x)/2=3x=12
3x=12
Hence, x=4.
The answer is D.
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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 30 Apr 2018, 16:39
Bunuel wrote:
If the average of 2x and 4x is 12, then x =

(A) 1
(B) 2
(C) 3
(D) 4
(E) 24


We can create the equation:

(2x + 4x)/2 = 12

6x/2 = 12

6x = 24

x = 4

Answer: D
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Re: If the average of 2x and 4x is 12, then x = [#permalink]

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New post 15 May 2018, 19:02
this question could really come to gmat? what is the source of this question
Re: If the average of 2x and 4x is 12, then x =   [#permalink] 15 May 2018, 19:02
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If the average of 2x and 4x is 12, then x =

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