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Re: If n + k = m, what is the value of k ? [#permalink]

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13 Aug 2012, 08:12

IMO B n+k=m, Find K ie m-n = k St 2: Sufficient: m+10=n ie m-n=-10=k St 1: Insufficient. n=10, we don't know the value of either m or k
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Re: If n + k = m, what is the value of k ? [#permalink]

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13 Aug 2012, 08:49

it should be B. From B alone we can compute the value of K.
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Re: If n + k = m, what is the value of k ? [#permalink]

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30 Jul 2016, 08:40

Bunuel wrote:

If n + k = m, what is the value of k ?

(1) n = 10 (2) m + 10 = n

We are given that n + k = m, and we need to determine the value of k. Since we know that n + k = m, we know that k = m – n. Thus, if we determine a value for m – n, we will know the value of k.

Statement One Alone:

n = 10

Although we know that n = 10, without knowing the value of m, we cannot determine the value of k. Statement one alone is not sufficient. We can eliminate answer choices A and D.

Statement Two Alone:

m + 10 = n

Manipulating statement two we get:

m + 10 = n

m – n = -10

Since we know that m – n = -10, we know that k = -10. Statement two alone is sufficient.

The answer is B.
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Re: If n + k = m, what is the value of k ?
[#permalink]
30 Jul 2016, 08:40

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