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Sue planted 4 times as many apple seeds as she planted orang

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sparkles3144
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Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   Updated on: 21 Aug 2014, 07:10
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Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 percent of the orange seeds grew into trees. If a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did Sue plant?

A. 540
B. 600
C. 660
D. 720
E. 760

Shouldn't the ratio of apple:orange be 4:1 or 4A=O?
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B

Originally posted by sparkles3144 on 21 Aug 2014, 05:55.
Last edited by Bunuel on 21 Aug 2014, 07:10, edited 1 time in total.
RENAMED THE TOPIC.
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Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   Updated on: 14 Aug 2022, 10:59
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Sue planted 4 times as many apple seeds as she planted orange seeds.
Yes, apple : orange be 4 : 1 but this translates to Apple = 4*Orange and not 4*Apple = Orange

Let Orange be x
Apple = 4*Orange = 4x

0.15*Apple + 0.10*Orange = 420
=> 0.15*4x + 0.10*x = 420
=> 0.7x = 420
=> x = 600

So, Answer will be B
Hope it helps!

Originally posted by BrushMyQuant on 21 Aug 2014, 07:01.
Last edited by BrushMyQuant on 14 Aug 2022, 10:59, edited 1 time in total.
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Nehall77
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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   30 Aug 2014, 14:39
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Its even easier to back solve, If we consider 600 as total number of oranges, Apple becomes directly 2400, Also 10% Oranges would have been 60 we are given 420, hence 360 must be 15 % of total apple, that is 2400 hence it can be done in less than a minute.
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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   17 Feb 2017, 18:16
BrushMyQuant wrote:
Sue planted 4 times as many apple seeds as she planted orange seeds.
Yes, apple:orange be 4:1 but this translates to Apple = 4*Orange and not 4*Apple = Orange

Let Orange be x
Apple = 4*Orange = 4x

0.15Apple + 0.10Orange = 420
=> 0.15*4x + 0.10*x = 420
=> 0.7x = 420
=> x = 600

So, answer will be B

Hope it helps!


sparkles3144 wrote:
Sue planted 4 times as many apple seeds as she planted orange seeds. 15 percent of the apple seeds grew into trees, and 10 percent of the orange seeds grew into trees. If a total of 420 apple trees and orange trees grew from the seeds, how many orange seeds did Sue plant?

A. 540
B. 600
C. 660
D. 720
E. 760

Shouldn't the ratio of apple:orange be 4:1 or 4A=O?



I follow that A = 4O, but if apple seeds are 15% and orange 10%, Why wouldn't it be .15(1)x + .1(4)x = .15x+.4x = 720?
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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   04 Dec 2018, 06:39
Why the equation is not orange = 4 apples ? What is the best way to interpret such complicated statements into equations?
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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   04 Dec 2018, 07:22
OA:B

Let the number of Apple seeds planted be \(A\).
Let the number of Orange seeds planted be \(O\).

\(A=4O\).....(1)

\(\frac{15}{100}A+\frac{10}{100}O=420\).....(2)

Substituting (1) into (2), we get

\(\frac{15}{100}*4O+\frac{10}{100}O=420\)

\(\frac{70}{100}O=420\)

\(O=\frac{420*100}{70}=600\)
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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink] New post   13 Mar 2024, 09:55
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Sue planted 4 times as many apple seeds as she planted orang [#permalink]
13 Mar 2024, 09:55
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