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For any increase in x, the value of y decreases by double the value..

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souvonik2k
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For any increase in x, the value of y decreases by double the value.. [#permalink] New post   Updated on: 22 Nov 2016, 08:27
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For any increase in x, the value of y decreases by double the value of increase in x. Also, for any decrease in x, the value of y increases by double the value of decrease in x. What is the value of x when y is 2?

(1) When x is 1, y = 5.
(2) When x is 3, y = 1.
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D

Originally posted by souvonik2k on 06 Nov 2016, 01:19.
Last edited by Kurtosis on 22 Nov 2016, 08:27, edited 2 times in total.
Edited the question for better understanding
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Re: For any increase in x, the value of y decreases by double the value.. [#permalink] New post   06 Nov 2016, 02:20
Expert Reply
souvonik2k wrote:
For any increase in x, the value of y decreases by double the value. Also, for any decrease in x, the
value of y increases by double the value. What is the value of x when y is 2?
(1) When x is 1, y = 5.
(2) When x is 3, y = 1.

If u liked the question, don't hesitate to give kudos.
It encourages people like me to post new questions. :)


What source is this question from???

The language of the question seems confusing...

"For any increase in x, the value of y decreases by double the value: it doesn't say double of what value... i mean whether y decreased by 2y or decreases by 2x or decreases by double the value of increase in x

I am assuming third assumption is being used in this question
i.e. if x changes to x+a
y becomes y-2a

using this

(1) When x is 1, y = 5.
i.e. if y decreased by 2, x will increase by 1
and if y decreased by 3, x will increase by 1.5
hence at y=2, x becomes 2.25
SUFFICIENT

(2) When x is 3, y = 1.
Similarly sifficient

Answer: Option D
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souvonik2k
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Re: For any increase in x, the value of y decreases by double the value.. [#permalink] New post   06 Nov 2016, 03:35
GMATinsight wrote:
souvonik2k wrote:
For any increase in x, the value of y decreases by double the value. Also, for any decrease in x, the
value of y increases by double the value. What is the value of x when y is 2?
(1) When x is 1, y = 5.
(2) When x is 3, y = 1.

If u liked the question, don't hesitate to give kudos.
It encourages people like me to post new questions. :)


What source is this question from???

The language of the question seems confusing...

"For any increase in x, the value of y decreases by double the value: it doesn't say double of what value... i mean whether y decreased by 2y or decreases by 2x or decreases by double the value of increase in x

I am assuming third assumption is being used in this question
i.e. if x changes to x+a
y becomes y-2a

using this

(1) When x is 1, y = 5.
i.e. if y decreased by 2, x will increase by 1
and if y decreased by 3, x will increase by 1.5
hence at y=2, x becomes 2.25
SUFFICIENT

(2) When x is 3, y = 1.
Similarly sifficient

Answer: Option D


Hi
This question is from Nova's DS.
As i understand, the question means that the value by which x increases, y is decreased by double that value and similarly for a decrease.
Suppose, if x increases by 1, y decreases by 2.
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GMATinsight
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GMAT: QUANT+DI EXPERT
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Re: For any increase in x, the value of y decreases by double the value.. [#permalink] New post   06 Nov 2016, 05:33
Expert Reply
souvonik2k wrote:
GMATinsight wrote:
souvonik2k wrote:
For any increase in x, the value of y decreases by double the value. Also, for any decrease in x, the
value of y increases by double the value. What is the value of x when y is 2?
(1) When x is 1, y = 5.
(2) When x is 3, y = 1.

If u liked the question, don't hesitate to give kudos.
It encourages people like me to post new questions. :)


What source is this question from???

The language of the question seems confusing...

"For any increase in x, the value of y decreases by double the value: it doesn't say double of what value... i mean whether y decreased by 2y or decreases by 2x or decreases by double the value of increase in x

I am assuming third assumption is being used in this question
i.e. if x changes to x+a
y becomes y-2a

using this

(1) When x is 1, y = 5.
i.e. if y decreased by 2, x will increase by 1
and if y decreased by 3, x will increase by 1.5
hence at y=2, x becomes 2.25
SUFFICIENT

(2) When x is 3, y = 1.
Similarly sifficient

Answer: Option D


Hi
This question is from Nova's DS.
As i understand, the question means that the value by which x increases, y is decreased by double that value and similarly for a decrease.
Suppose, if x increases by 1, y decreases by 2.


with respect to the same understand as you mentioned, You can check the solution I have given above.

As GMAT Trainer a small suggestion is "Do NOT use bad resources for practice and Nova is one of such bad resources"

I hope this helps!!! :)
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Re: For any increase in x, the value of y decreases by double the value.. [#permalink]
06 Nov 2016, 05:33
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