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Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4

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Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4  [#permalink]

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New post Updated on: 11 Nov 2018, 20:23
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A
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Difficulty:

  45% (medium)

Question Stats:

63% (01:18) correct 37% (01:48) wrong based on 82 sessions

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Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4:1 respectively. X liters of the solution from bottle A are to be mixed with Y liters of the solution from bottle 8. What will be the percentage of alcohol in the resultant solution?

(1) X = Y

(2) Total 10 liters of solutions from bottles A and B are mixed.

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Difficulty Level: 700

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Originally posted by SajjadAhmad on 18 Oct 2018, 10:24.
Last edited by SajjadAhmad on 11 Nov 2018, 20:23, edited 1 time in total.
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Re: Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4  [#permalink]

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New post 18 Oct 2018, 10:30
1
SajjadAhmad wrote:
Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4:1 respectively. X liters of the solution from bottle A are to be mixed with Y liters of the solution from bottle 8. What will be the percentage of alcohol in the resultant solution?

(1) X = Y

(2) Total 10 liters of solutions from bottles A and B are mixed.

EG


To find the percentage in the resulting solution, we need to know the ratio between X and Y (note - we do not need actual number of liters!)
We'll look for statements that give us this information, a Logical approach.

(1) This gives us the ratio (1:1), just what we need!
Sufficient.

(2) But what is the ratio between them?
Insufficient.

(A) is our answer.
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Re: Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4  [#permalink]

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New post 18 Oct 2018, 10:33
A
equal proportion from both mixture (any %) will have resultant ratio 5:4
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Re: Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4  [#permalink]

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New post 11 Nov 2018, 18:39
I dont understand how A is the correct answer. Can someone explain this approach step by step?
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Re: Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4 &nbs [#permalink] 11 Nov 2018, 18:39
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Bottles A and 8 contain alcohol-water solutions in ratios of 1:3 and 4

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