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If P and R were solutions of water and ammonia and if

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If P and R were solutions of water and ammonia and if [#permalink]

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If P and R were solutions of water and ammonia and if solution S consisted of 2 parts of P and 3 parts of R, what percent of solution S was ammonia?

(1) Solution P contained 10 percent ammonia and solution R contained 3 percent ammonia.
(2) There was a total of 10 liters of solution S.
[Reveal] Spoiler: OA

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 [#permalink]

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New post 07 Dec 2004, 07:38
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I agree with A
Let a-ammonia
w-water
then P= 0.1a+0.9w
R=0.03a+0.97w
S=2P+3R=2(0.1a+0.9w)+3(0.03a+0.97w)=0.29a+4.71w
then water is 94.2% and ammonia 5.8%

Am I right? :?

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Location: India
Concentration: Technology, Finance
GMAT 1: 580 Q48 V21
GMAT 2: 530 Q49 V13
GMAT 3: 590 Q49 V21
WE: Information Technology (Computer Software)
Re: If P and R were solutions of water and ammonia and if [#permalink]

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New post 26 Nov 2013, 12:15
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Easy One.
Given: Solution S consisted of 2 parts of P and 3 parts of R.
Find: %ammonia in S= ?
1) Sufficient. If Solution P contained 10 percent ammonia and solution R contained 3 percent ammonia then
Concentration of final sol = {(2X)(.1) + (3X)(.03) }*100/ 5X
=29/5
=5.8%
Eliminate B,C,E.
2) No Sufficient.Eliminate D

Answer is A

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Re: If P and R were solutions of water and ammonia and if [#permalink]

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Re: If P and R were solutions of water and ammonia and if [#permalink]

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New post 15 Dec 2015, 15:36
Hello from the GMAT Club BumpBot!

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Re: If P and R were solutions of water and ammonia and if [#permalink]

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New post 07 Mar 2017, 18:41
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If P and R were solutions of water and ammonia and if   [#permalink] 07 Mar 2017, 18:41
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