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If 4(r – s) = –2, then what is r, in terms of s ?

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Bunuel
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If 4(r – s) = –2, then what is r, in terms of s ? [#permalink] New post   30 Oct 2019, 23:52
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If \(4(r – s) = –2\), then what is r, in terms of s ?


(A) \(\frac{-8}{2}\)

(B) \(s - \frac{1}{2}\)

(C) \(s - \frac{3}{2}\)

(D) \(s + 2\)

(E) \(2s\)
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B
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Re: If 4(r – s) = –2, then what is r, in terms of s ? [#permalink] New post   31 Oct 2019, 00:17
Bunuel wrote:
If \(4(r – s) = –2\), then what is r, in terms of s ?


(A) \(\frac{-8}{2}\)

(B) \(s - \frac{1}{2}\)

(C) \(s - \frac{3}{2}\)

(D) \(s + 2\)

(E) \(2s\)


\(4(r – s) = –2\),

\(4r - 4s = -2\)

\(4r = -2 + 4s\)

\(r\) = \(\frac{-2}{4}\) + \(\frac{4s}{4}\)

\(r\) = \(\frac{-1}{2}\) + \(s\)

\(r\) = \(s\) - \(\frac{1}{2}\)

(B)
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Re: If 4(r – s) = –2, then what is r, in terms of s ? [#permalink] New post   31 Oct 2019, 05:43
If 4(r–s)=–2, then what is r, in terms of s ?

(r-s)=-1/2

r=s-1/2

r=(2s-1)/2

option B is correct
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Re: If 4(r – s) = –2, then what is r, in terms of s ? [#permalink] New post   31 Oct 2019, 06:40
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Solution



Given
    • 4(r–s)=–2

To find
    • Value of r in terms of s

Approach and Working out
    • 4(r–s)=–2
    • r-s = -2/4 = -1/2
    • r= s -1/2

Thus, option B is the correct answer.
Correct Answer: Option B
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Re: If 4(r – s) = –2, then what is r, in terms of s ? [#permalink] New post   31 Oct 2019, 08:02
Bunuel wrote:
If \(4(r – s) = –2\), then what is r, in terms of s ?


(A) \(\frac{-8}{2}\)

(B) \(s - \frac{1}{2}\)

(C) \(s - \frac{3}{2}\)

(D) \(s + 2\)

(E) \(2s\)

\(4(r – s) = –2\)

Or, \((r – s) = –\frac{1}{2}\)

Or, \(r = s –\frac{1}{2}\) , Answer must (B)
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Re: If 4(r s) = 2, then what is r, in terms of s ? [#permalink] New post   20 Sep 2022, 10:18
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Given that 4(r – s) = –2 and we need to find what is r, in terms of s

4(r – s) = –2

=> r - s = \(\frac{-2}{4}\) = \(\frac{-1}{2}\)

=> r = s - \(\frac{1}{2}\)

So, Answer will be B
Hope it helps!
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Re: If 4(r s) = 2, then what is r, in terms of s ? [#permalink]
20 Sep 2022, 10:18
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