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# What is the value of x?

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Manager
Joined: 10 Feb 2011
Posts: 104
What is the value of x?  [#permalink]

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26 Feb 2011, 17:37
2
4
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Difficulty:

45% (medium)

Question Stats:

62% (01:23) correct 38% (00:59) wrong based on 289 sessions

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What is the value of x?

(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.
Math Expert
Joined: 02 Sep 2009
Posts: 58434
Re: What is the value of x? (1) When x is multiplied by 8, the  [#permalink]

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26 Feb 2011, 17:48
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banksy wrote:
What is the value of x?
(1) When x is multiplied by 8, the result is between 50 and 60.
(2) When x is doubled, the result is between 10 and 15.

What is the value of x?

Note that we are not told that x is an integer.

(1) When x is multiplied by 8, the result is between 50 and 60 --> 50<8x<60 --> 50/8<x<60/8 --> 6.25<x<7.5. Not sufficient.

(2) When x is doubled, the result is between 10 and 15 --> 10<2x<15 --> 5<x<7.5. Not sufficient.

(1)+(2) 6.25<x<7.5. Not sufficient.

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Director
Joined: 01 Feb 2011
Posts: 544
Re: What is the value of x? (1) When x is multiplied by 8, the  [#permalink]

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07 Mar 2011, 19:29
1 is not sufficient, as it can have more than 1 possible answer(7 , 55.5/8 so on)

2. is not sufficient , as it could have x = 6 , 7 and some non integer values as well.

together still not sufficient as x can 55.5/8 or 59/8 or 7.. so on.

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Re: What is the value of x?  [#permalink]

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01 Nov 2018, 08:38
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Re: What is the value of x?   [#permalink] 01 Nov 2018, 08:38
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