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

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Math Expert
Joined: 02 Sep 2009
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If 4(r – s) = –2, then what is r, in terms of s ?  [#permalink]

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12 Jul 2018, 23:16
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Difficulty:

5% (low)

Question Stats:

100% (00:40) correct 0% (00:00) wrong based on 24 sessions

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

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12 Jul 2018, 23:22
$$4(r-s) = -2$$

$$4r - 4s = -2$$

$$4r = 4s -2$$

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

$$r = s - \frac{1}{2}$$

Hence option B
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Re: If 4(r – s) = –2, then what is r, in terms of s ?  [#permalink]

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12 Jul 2018, 23:23
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) $$2s$$

Given, 4(r – s) = –2
Or, $$r-s=\frac{-2}{4}=\frac{-1}{2}$$
Or, $$r=s-\frac{1}{2}$$

Option. (B)
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Re: If 4(r – s) = –2, then what is r, in terms of s ?  [#permalink]

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12 Jul 2018, 23:26
Bunuel wrote:
If 4(r – s) = –2, then what is r, in terms of s ?

4(r – s) = –2
r – s = –1/2
r = s - 1/2

Hence, B.
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Re: If 4(r – s) = –2, then what is r, in terms of s ?  [#permalink]

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13 Jul 2018, 03:02
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) $$2s$$

Given

4( r-s ) = -2

2( r-s) = -1

2r - 2s = -1

2r = 2s -1

r = (2s-1) / 2

r = s - 1/2.

Thus the best answer is B.
Re: If 4(r – s) = –2, then what is r, in terms of s ? &nbs [#permalink] 13 Jul 2018, 03:02
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