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What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)

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What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)  [#permalink]

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New post 28 Mar 2019, 12:26
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Question Stats:

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What is the value of \(x – y ?\)

(1) \((x – y)^2 = 25\)

(2) \(4x = 4(y + 3)\)

Source: McGraw-Hill's GMAT
Difficulty Level: 650

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Re: What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)  [#permalink]

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New post 28 Mar 2019, 12:31
1
From S1:

\((x-y)^2 = 25\)
x-y = +5 or -5
Hence Insufficient.

From S2:

4x = 4(y+3)
x = y+3
x-y = 3
Sufficient.

B is the answer.
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Re: What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)  [#permalink]

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New post 28 Mar 2019, 13:16
SajjadAhmad wrote:
What is the value of \(x – y ?\)

(1) \((x – y)^2 = 25\)

(2) \(4x = 4(y + 3)\)

Source: McGraw-Hill's GMAT


#1
x-y= +/-5 ; insufficient
#2
solve ; x-y= 3/4
sufficient
IMO B
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Re: What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)  [#permalink]

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New post 05 Apr 2019, 06:00
SajjadAhmad wrote:
What is the value of \(x – y ?\)

(1) \((x – y)^2 = 25\)

(2) \(4x = 4(y + 3)\)

Source: McGraw-Hill's GMAT



Both the statements are inconsistent, both should give the same value for X-Y.
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Re: What is the value of x – y ? (1) (x – y)^2 = 25 (2) 4x = 4(y + 3)   [#permalink] 05 Apr 2019, 06:00
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