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Does ax = 5 – x? (1) ax = 5 (2) x = 1

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Manager
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Joined: 02 Jun 2015
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Does ax = 5 – x? (1) ax = 5 (2) x = 1  [#permalink]

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New post 25 Oct 2016, 14:51
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Difficulty:

  65% (hard)

Question Stats:

46% (01:15) correct 54% (01:31) wrong based on 68 sessions

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Does ax = 5 – x?

(1) ax = 5
(2) x = 1

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Manager
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Joined: 28 Jun 2016
Posts: 210
Location: Canada
Concentration: Operations, Entrepreneurship
Re: Does ax = 5 – x? (1) ax = 5 (2) x = 1  [#permalink]

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New post 25 Oct 2016, 15:35
Statement 1:

If ax=5, then x has to be zero to satisfy the equation.

If x=0, then ax cannot be 5.

So LHS is not equal to RHS

Sufficient

Statement 2:

No info about a

Insufficient

A


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Posts: 998
Re: Does ax = 5 – x? (1) ax = 5 (2) x = 1  [#permalink]

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New post 25 Oct 2016, 20:49
duahsolo wrote:
Does ax = 5 – x?

(1) ax = 5
(2) x = 1


(1) if ax=5 then in RHS 5-x ,x must be 0
but it contradicts as ax=5, so X must be any number---->ax = 5 – x-------NO
......sufficient

(2) if a=4 ,x=1 then ax = 5 – x(4=4)------>Yes
if a=5,x=1 then ax = 5 – x (5=4)----------->No------->not suff..

Ans A
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Re: Does ax = 5 – x? (1) ax = 5 (2) x = 1  [#permalink]

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New post 20 Apr 2019, 14:40
Yes/No Question:
ax = 5 - x?
a = (5-x)/x?
a = (5/x) - 1?

(1) ax = 5
a = 5/x
Plug into stem, 5/x = 5/x - 1?
Subtract 5/x, 0 = -1?
Definite no, sufficient

(2) x = 1
Plug into stem, a = 5/1 - 1?
a = 4?
No new info about a in relation to x, insufficient
GMAT Club Bot
Re: Does ax = 5 – x? (1) ax = 5 (2) x = 1   [#permalink] 20 Apr 2019, 14:40
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