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

Question

Does ax = 5 – x?

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

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chetan2u · Answer

(1) ax = 5
So, what can we say about a and x => Both are of SAME sign and are not 0.
subtract x from both sides of ax=5 => ax-x=5-x.
But we are looking for whether ax=5-x OR ax=ax-x, that is x=0?
We know that  x
eq{0} , so answer to 'Does ax = 5 – x?' is NO.
Sufficient

(2) x = 1
So we are looking for whether ax=5-x or a*1=5-1 or a=4?
We do not know that.
Insuff

A

Kinshook · Answer

Asked: Does ax = 5 – x?

Q: (a+1)x = 5?

(1) ax = 5
 (a+1)x 
eq 5 
SUFFICIENT

(2) x = 1
(a+1) = 5
It is true only when a = 4
NOT SUFFICIENT

IMO A

TarunKumar1234 · Answer

Does ax = 5 – x? Stat1: ax = 5, then, 5= 5-x, x=0. And for x=0, ax not equal to 5 – x. Sufficient . Stat2: x = 1, then a=5-1 =4? ,we are not sure. Insufficient. So, I think A.

carouselambra · Answer

IMO A

Does ax = 5 – x?
Simplify : x(a+1)=5

(1) ax = 5
Hence we know, x is not equal to 5.
Sufficient.

(2) x = 1
Insufficient

GCMEMBER · Answer

Does ax = 5 – x?

(1) ax = 5
ax = 5 – x
5 = 5 - x
X = 0
So, ax = 5 – x
5 = 5 - 0
Sufficient

(2) x = 1
Not sufficient

Option A

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

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GMAT Data Sufficiency (DS) Questions

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

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