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Founder  Joined: 18 Apr 2015
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If 2r - s = 3s - 2r, what is s in terms of r ? [#permalink]
Expert's post 00:00

Question Stats: 87% (00:21) correct 12% (00:02) wrong based on 32 sessions
If $$2r - s = 3s - 2r$$, what is s in terms of r ?

A. $$\frac{r}{3}$$

B. $$\frac{r}{2}$$

C. $$r$$

D. $$2r$$

E. $$3r$$
[Reveal] Spoiler: OA

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GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests. Intern Joined: 26 Jun 2018
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Re: If 2r - s = 3s - 2r, what is s in terms of r ? [#permalink]
1
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C ... fairly straight forward...4r = 4s ... => s = r...leading to (C)
Intern Joined: 20 Oct 2019
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Re: If 2r - s = 3s - 2r, what is s in terms of r ? [#permalink]
Thanks!
GRE Instructor Joined: 10 Apr 2015
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Re: If 2r - s = 3s - 2r, what is s in terms of r ? [#permalink]
Expert's post
Carcass wrote:
If $$2r - s = 3s - 2r$$, what is s in terms of r ?

A. $$\frac{r}{3}$$

B. $$\frac{r}{2}$$

C. $$r$$

D. $$2r$$

E. $$3r$$

Our goal is to solve this equation for $$s$$

Take: $$2r - s = 3s - 2r$$

Add $$2r$$ to both sides to get: $$4r - s = 3s$$

Add $$s$$ to both sides to get: $$4r = 4s$$

Divide both sides by $$4$$ to get: $$r = s$$

Cheers,
Brent
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Brent Hanneson – Creator of greenlighttestprep.com
If you enjoy my solutions, you'll like my GRE prep course.  Re: If 2r - s = 3s - 2r, what is s in terms of r ?   [#permalink] 19 Jan 2020, 07:29
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