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# If 1/x + 1/3 + 1/4 = 1, then x =

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Math Expert
Joined: 02 Sep 2009
Posts: 58458
If 1/x + 1/3 + 1/4 = 1, then x =  [#permalink]

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23 Oct 2018, 21:41
00:00

Difficulty:

15% (low)

Question Stats:

91% (00:46) correct 9% (01:23) wrong based on 24 sessions

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If $$\frac{1}{x} + \frac{1}{3} + \frac{1}{4} = 1$$, then x =

A. 2
B. 24/11
C. 12/5
D. 5
E. 6

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Director
Joined: 20 Feb 2015
Posts: 762
Concentration: Strategy, General Management
Re: If 1/x + 1/3 + 1/4 = 1, then x =  [#permalink]

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23 Oct 2018, 23:16
Bunuel wrote:
If $$\frac{1}{x} + \frac{1}{3} + \frac{1}{4} = 1$$, then x =

A. 2
B. 24/11
C. 12/5
D. 5
E. 6

1/x = 1 - [ 1/3 + 1/4 ]
1/x = 1 - [ 7/12 ]
1/x = 5/12
x = 12/5
C
Re: If 1/x + 1/3 + 1/4 = 1, then x =   [#permalink] 23 Oct 2018, 23:16
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