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If 3x – t = t + 5x, what is the value of x ?

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Joined: 17 Mar 2018
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If 3x – t = t + 5x, what is the value of x ?  [#permalink]

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New post 02 Oct 2018, 04:23
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Question Stats:

99% (00:41) correct 1% (00:37) wrong based on 76 sessions

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If 3x – t = t + 5x, what is the value of x ?

(1) t = 4
(2) x < 0
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Joined: 31 Oct 2013
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Concentration: Accounting, Finance
GPA: 3.68
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Re: If 3x – t = t + 5x, what is the value of x ?  [#permalink]

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New post 02 Oct 2018, 14:03
taniad wrote:
If 3x – t = t + 5x, what is the value of x ?

(1) t = 4
(2) x < 0



Statement 1: t = 4. we can plug this value into the equation and can find out the value of x. Sufficient.

Statement : x<0. we just know that x is negative. No information regarding t. NOT sufficient.

The best answer is A.
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Re: If 3x – t = t + 5x, what is the value of x ?  [#permalink]

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New post 27 Jul 2019, 07:19
Top Contributor
taniad wrote:
If 3x – t = t + 5x, what is the value of x ?

(1) t = 4
(2) x < 0

Given: 3x – t = t + 5x

Target question: What is the value of x ?

Statement 1: t = 4
Take: 3x – t = t + 5x
Replace t with 4 to get: 3x – 4 = 4 + 5x
When we solve this equation, we get x = -4
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: x < 0
If x < 0, then x can have infinitely-many different values
Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT

Answer: A

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Brent
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Re: If 3x – t = t + 5x, what is the value of x ?   [#permalink] 27 Jul 2019, 07:19
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