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Jane has a 40-ounce mixture of apple juice and seltzer that

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GMAT Club Legend
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Joined: 07 Jun 2014
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Jane has a 40-ounce mixture of apple juice and seltzer that [#permalink] New post 02 Jun 2018, 03:47
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Question Stats:

66% (01:23) correct 33% (01:55) wrong based on 9 sessions
Jane has a 40-ounce mixture of apple juice and seltzer that is 30% apple juice. If she pours 10 more ounces of apple juice into the mixture, what percent of the mixture will be seltzer?

(A) 33%
(B) 44%
(C) 50%
(D) 56%
(E) 67%
[Reveal] Spoiler: OA

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Re: Jane has a 40-ounce mixture of apple juice and seltzer that [#permalink] New post 09 Jun 2018, 12:19
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sandy wrote:
Jane has a 40-ounce mixture of apple juice and seltzer that is 30% apple juice. If she pours 10 more ounces of apple juice into the mixture, what percent of the mixture will be seltzer?

(A) 33%
(B) 44%
(C) 50%
(D) 56%
(E) 67%


Given 40 ounce mix = Apple juice + seltzer

Now 40 ounces contain 30% apple juice i.e. 12 ounce and seltzer will be 28 ounces.

We are told that 10 more ounces of apple juice ( 100% ) is added to mixture, then total mixture will be 50 ounces.

We want seltzer percentage in the total juice and since only 100% apple juice is added, seltzer concentration doesn't get affected.

So. 28 / 50 => 0.56

D.
GMAT Club Legend
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
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Re: Jane has a 40-ounce mixture of apple juice and seltzer that [#permalink] New post 14 Jul 2018, 04:34
Expert's post
Explanation

Originally, Jane had a 40-ounce mixture of apple and seltzer that was 30% apple. Since 0.30(40) = 12, 12 ounces were apple and 28 ounces were seltzer.

When Jane pours 10 more ounces of apple juice into the mixture, it yields a mixture that is 50 ounces total, still with 28 ounces of seltzer. Now, the percent of seltzer in the final mixture is \(\frac{28}{50} \times 100 =56%\).

Hence option D is correct!
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Re: Jane has a 40-ounce mixture of apple juice and seltzer that   [#permalink] 14 Jul 2018, 04:34
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Jane has a 40-ounce mixture of apple juice and seltzer that

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