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If x – 4y = 1, what is the value of x ?

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Senior Manager
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Joined: 02 Jan 2017
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If x – 4y = 1, what is the value of x ?  [#permalink]

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New post 03 Mar 2017, 23:34
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A
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Difficulty:

  35% (medium)

Question Stats:

68% (00:58) correct 32% (01:08) wrong based on 34 sessions

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If x – 4y = 1, what is the value of x ?

(1) x = 4y + 1

(2) y = (x/2) + 1
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Re: If x – 4y = 1, what is the value of x ?  [#permalink]

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New post 04 Mar 2017, 03:48
Translation
to find the answer, we need:
1# exact value of either x or y or both
2# another equation in x and y

Statement analysis
St 1: x =4y+1 or x-4y = 1. same equation as given in the problem statement. INSUFFICIENT
St 2: y = x/2 + 1. substitution y in the equation in the question, we get x -2x -4 = 1 or x = -3. ANSWER

Option B
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Re: If x – 4y = 1, what is the value of x ? &nbs [#permalink] 04 Mar 2017, 03:48
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