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Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n
[#permalink]
08 Nov 2011, 01:46
08 Nov 2011, 01:46
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Does 2m - 3n = 0
(1) m ≠ 0
(2) 6m = 9n
(1) m ≠ 0
(2) 6m = 9n
The answer is B, but I don't understand why.
1. Can't you rewrite the above as 2m = 3n?
If M is...then N is
3 2
6 4
-3 -2
-6 -4
2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff
1. Can't you rewrite the above as 2m = 3n?
If M is...then N is
3 2
6 4
-3 -2
-6 -4
2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff
Intern
Joined: 08 Sep 2011
Status:Accepted - SMU, Singapore (Class of 2013)
Posts: 22
Location: Singapore
Concentration: Finance, General Management
GMAT 1: 620 Q46 V29
GMAT 2: 710 Q50 V35
WE:Information Technology (Computer Software)
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n
[#permalink]
08 Nov 2011, 02:49
08 Nov 2011, 02:49
1
Kudos
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
Intern
Joined: 09 Mar 2010
Posts: 14
Concentration: Technology, General Management
Schools: McCombs '14
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n
[#permalink]
08 Nov 2011, 03:40
08 Nov 2011, 03:40
Damouse wrote:
Does 2m - 3n = 0
1. m not = 0
2. 6m = 9n
The answer is B, but I don't understand why.
1. Can't you rewrite the above as 2m = 3n?
If M is...then N is
3 2
6 4
-3 -2
-6 -4
2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff
1. m not = 0
2. 6m = 9n
The answer is B, but I don't understand why.
1. Can't you rewrite the above as 2m = 3n?
If M is...then N is
3 2
6 4
-3 -2
-6 -4
2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff
The qn says is 2m-3n = 0?
You need to have the values or stat tht gives the result.
i) m is not 0 (may or may not make the stat true)
ii) 6m = 9n implies 2m = 3n so proves the stat 2m-3n = 0 and the stat is true.
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n
[#permalink]
16 Feb 2012, 00:33
16 Feb 2012, 00:33
piyushpachori wrote:
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
I probably complicate myself but still wish to clarify if this can be E.
Since the question didn't indicate it is m & n are both INTEGER, so put fraction into considerations as well.
When I put in
m = 2, n = 3 or m = 1/2, n = 1/3, B comes valid...so isn't it a vague question? or I missed any important step? pls advise..thanks
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n
[#permalink]
16 Feb 2012, 01:05
16 Feb 2012, 01:05
Expert Reply
miweekend wrote:
piyushpachori wrote:
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2
Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.
Ans. B
I probably complicate myself but still wish to clarify if this can be E.
Since the question didn't indicate it is m & n are both INTEGER, so put fraction into considerations as well.
When I put in
m = 2, n = 3 or m = 1/2, n = 1/3, B comes valid...so isn't it a vague question? or I missed any important step? pls advise..thanks
You are right we are not told that m and n are integers, though we can get that statement (2) is sufficeint even not knowing that.
Does 2m - 3n = 0
Question basically asks whether \(2m=3n\)
(1) \(m\neq{0}\) --> clearly insufficient as no info about n.
(2) \(6m=9n\) --> reduce by 3: \(2m=3n\), so this statement directly answers the question (so here it doesn't matter whether m and n are integers). Sufficient.
Answer: B.
Hope it's clear.
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Re: Does 2m - 3n = 0 (1) m 0 (2) 6m = 9n
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23 Nov 2023, 02:55
23 Nov 2023, 02:55
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Re: Does 2m - 3n = 0 (1) m 0 (2) 6m = 9n [#permalink]
23 Nov 2023, 02:55
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