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A fruit-salad mixture consists of apples, peaches, and grape

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A fruit-salad mixture consists of apples, peaches, and grape [#permalink] New post 20 Dec 2012, 06:17
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A fruit-salad mixture consists of apples, peaches, and grapes in the ratio 6:5:2, respectively, by weight. If 39 pounds of the mixture is prepared, the mixture includes how many more pounds of apples than grapes?

(A) 15
(B) 12
(C) 9
(D) 6
(E) 4
[Reveal] Spoiler: OA
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Re: A fruit-salad mixture consists of apples, peaches, and grape [#permalink] New post 20 Dec 2012, 06:20
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Walkabout wrote:
A fruit-salad mixture consists of apples, peaches, and grapes in the ratio 6:5:2, respectively, by weight. If 39 pounds of the mixture is prepared, the mixture includes how many more pounds of apples than grapes?

(A) 15
(B) 12
(C) 9
(D) 6
(E) 4


Given that A:P:G=6x:5x:2x and 6x+5x+2x=13x=39, from which it follows that x=3.

Therefore, A-G=6x-2x=4x=12.

Answer: B.
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Re: A fruit-salad mixture consists of apples, peaches, and grape [#permalink] New post 13 Sep 2013, 09:31
whats with the og putting such an easy question so late in the og book. after giving us the super hard overlap question and now they give us this...

if i get an easy question like this so far into my exam i would be a bit alarmed thinking my score is going down
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Re: A fruit-salad mixture consists of apples, peaches, and grape [#permalink] New post 04 Jan 2015, 03:12
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Re: A fruit-salad mixture consists of apples, peaches, and grape [#permalink] New post 04 Jan 2015, 11:41
Expert's post
Hi All,

Ratio/percent questions occur frequently on the GMAT; one of the great things about these questions is that they can be solved in a variety of ways:

Here, we have a ratio of Apples:Peaches:Grapes in the ratio of 6:5:2. We're told that 39 pounds of this mixture is prepared and we're asked how many MORE pounds of Apples are there than pounds of Grapes.

Since the answer choices are numbers, we can use them to our advantage and avoid some of the math. From the original ratio, we know that....

The pounds of....
Apples will be a multiple of 6
Peaches will be a multiple of 5
Grapes will be a multiple of 2
Total will be a multiple of 13

So, the difference in the pounds of Apples and Grapes will be 6 - 2 = some multiple of 4 pounds.

If we had 13 pounds total, then the difference would be 4 pounds. Since the total is MORE than 13 pounds, the difference will be MORE than 4 pounds (but still a multiple of 4). Only one answer fits that pattern:

Final Answer:
[Reveal] Spoiler:
B


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Re: A fruit-salad mixture consists of apples, peaches, and grape   [#permalink] 04 Jan 2015, 11:41
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