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Is x > 6 ?

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Is x > 6 ? [#permalink]

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New post 26 Jan 2016, 01:52
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If x > y, is x > 6 ?

(1) (x - 7)(y - 7) = 0
(2) x > 18 - 2y


Source: Gmatclasses, Madrid
[Reveal] Spoiler: OA
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Re: Is x > 6 ? [#permalink]

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New post 26 Jan 2016, 02:12
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kevincan1 wrote:
If x > y, is x > 6 ?

(1) (x - 7)(y - 7) = 0
(2) x > 18 - 2y


Source: Gmatclasses, Madrid


Hi,
since there is not much info in Q apart from x>y, lets see the statements..

(1) (x - 7)(y - 7) = 0
this will be possible , if either of x and y is 7..
if x is 7, x>6...
if y=7. x>y so x>7 and hence x>6..
Sufficient

(2) x > 18 - 2y
this can be written as x+2y>18..
x>y, but lets take they are almost equal in the worst possible scenario..
so x+2x>18..
3x>18..x>6..
hence Sufficient

ans D
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Re: Is x > 6 ? [#permalink]

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New post 24 Mar 2016, 17:41
kevincan1 wrote:
If x > y, is x > 6 ?

(1) (x - 7)(y - 7) = 0
(2) x > 18 - 2y


Source: Gmatclasses, Madrid


1. either x-7=0 or y-7=0, 1st case -> x=7, so yes, x>6. second case y=7. since x>y, then yes, x>6.

2. x>18-2y
note that if y is negative, x is always positive
now we need to see whether are options where x=<6.
suppose x=5, then y must be >6.5 but this is impossible, since x>y.
another case: x=6 -> y >6 - again impossible.
so x MUST be > than 6.
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Re: Is x > 6 ? [#permalink]

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New post 28 Mar 2017, 00:52
Hello from the GMAT Club BumpBot!

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Re: Is x > 6 ?   [#permalink] 28 Mar 2017, 00:52
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