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A chemistry student has one solution that’s 25 percent saline and anot
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26 Feb 2021, 06:55
26 Feb 2021, 06:55
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Question Stats:
78% (01:42) correct
21% (01:51) wrong based on 19 sessions
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A chemistry student has one solution that’s 25 percent saline and another that’s 15 percent saline. Approximately how many liters of the 25 percent solution must be added to the 15 percent solution to make 10 liters of a solution that’s 20 percent saline?
2.5
3.3
5.0
6.7
7.5
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
2.5
3.3
5.0
6.7
7.5
Kudos for the right answer and explanation
Question part of the project GRE Quantitative Reasoning Daily Challenge - (2021) EDITION
GRE - Math Book
Re: A chemistry student has one solution that’s 25 percent saline and anot
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26 Feb 2021, 09:50
26 Feb 2021, 09:50
Take,
Liquid A - 25% salinity & Liquid B - 15% salinity
Resultant mixture of 10Ltr -- A + B = 10 _ _ _ _ _ _ _ (1)
Mixture has 20% salinity
Hence salt content = 2
0.25A + 0.15B = 2 _ _ _ _ _ _ _ (2)
By solving both question, we will get
A = B = 5
Answer C
Liquid A - 25% salinity & Liquid B - 15% salinity
Resultant mixture of 10Ltr -- A + B = 10 _ _ _ _ _ _ _ (1)
Mixture has 20% salinity
Hence salt content = 2
0.25A + 0.15B = 2 _ _ _ _ _ _ _ (2)
By solving both question, we will get
A = B = 5
Answer C
gmatclubot
Re: A chemistry student has one solution that’s 25 percent saline and anot [#permalink]
26 Feb 2021, 09:50
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