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If m and n are integers such that mn ≠ 0, what is the value of m/n?

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If m and n are integers such that mn ≠ 0, what is the value of m/n?  [#permalink]

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New post 12 Apr 2018, 21:41
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A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

67% (01:19) correct 33% (01:37) wrong based on 26 sessions

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Re: If m and n are integers such that mn ≠ 0, what is the value of m/n?  [#permalink]

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New post 12 Apr 2018, 21:56
Bunuel wrote:
If m and n are integers such that mn ≠ 0, what is the value of m/n?

(1) m - n = 8
(2) (m + n)(m - n) = 0


Question : what is the value of m/n?

Statement 1: m - n = 8
There are multiple scenarios e.g.
m = 9 and n = 1 and m/n = 9
m = 10 and n = 2 and m/n = 5

NOT SUFFICIENT

Statement 2: (m + n)(m - n) = 0

i.e. m^2 - n^2 = 0

i.e. m^2 = n^2

i.e. m/n = +1

NOT SUFFICIENT

COmbining two statement

we get that m-n = 8 i.e. m+n = 0 because product given as m + n)(m - n) = 0

m+n = 0
i.e. m = -n
i.e. m/n = -1
SUFFICIENT

Answer: option C
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Re: If m and n are integers such that mn ≠ 0, what is the value of m/n? &nbs [#permalink] 12 Apr 2018, 21:56
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If m and n are integers such that mn ≠ 0, what is the value of m/n?

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