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Liquid A is 32 percent iodine and the rest water. Liquid B i
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31 Jul 2020, 10:20
31 Jul 2020, 10:20
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Question Stats:
59% (01:58) correct
40% (02:15) wrong based on 129 sessions
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Liquid A is 32 percent iodine and the rest water. Liquid B is 17 percent iodine and the rest water.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The percentage of a 23 percent iodine mixture of liquid A and liquid B that is liquid A |
38 % |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Re: Liquid A is 32 percent iodine and the rest water. Liquid B i
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02 Aug 2020, 17:11
02 Aug 2020, 17:11
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A=TBhis is a nice question.
Basically QA is asking you: what percent of the combined mixture which is 23% iodine overall is A.
In other words, of the new mixture what % is made by the iodine labeled as A
This question could be solved quickly using weighted average
\(32A+17B=23(A+B)\)
After manipulation we do have
\(9A=6B\)
This means that the ration \(\frac{B}{A}=\frac{3}{2}\) or \(\frac{A}{B}=\frac{2}{3}\)
So in the solution A represents 2 parts and B 3 parts AND overall all parts add up to 5
So the ratio \(\frac{A}{Overall} = \frac{2}{5} = 40\)%
So quantity A is 40% and B is 38%
\(A > B\)
The answer to this question is A
Basically QA is asking you: what percent of the combined mixture which is 23% iodine overall is A.
In other words, of the new mixture what % is made by the iodine labeled as A
This question could be solved quickly using weighted average
\(32A+17B=23(A+B)\)
After manipulation we do have
\(9A=6B\)
This means that the ration \(\frac{B}{A}=\frac{3}{2}\) or \(\frac{A}{B}=\frac{2}{3}\)
So in the solution A represents 2 parts and B 3 parts AND overall all parts add up to 5
So the ratio \(\frac{A}{Overall} = \frac{2}{5} = 40\)%
So quantity A is 40% and B is 38%
\(A > B\)
The answer to this question is A
General Discussion
Re: Liquid A is 32 percent iodine and the rest water. Liquid B i
[#permalink]
31 Jul 2020, 10:20
31 Jul 2020, 10:20
Expert Reply
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Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
