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# Five percent of a certain grass seed is timothy. If the amount of the

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Five percent of a certain grass seed is timothy. If the amount of the [#permalink]

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20 Sep 2010, 10:10
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Five percent of a certain grass seed is timothy. If the amount of the mixture needed to plant one acre contains 2 pounds of timothy, how many acres can be planted with 240 pounds of the seed mixture?

A. 6
B. 12
C. 20
D. 24
E. 120
[Reveal] Spoiler: OA
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20 Sep 2010, 10:18
Five percent of a certain grass seed is timothy. If the amount of the mixture needed to plant one acre contains 2 pounds of timothy, how many acres can be planted with 240 pounds of the seed mixture?

Amount of timothy needed for one acre is 2 pounds.
So the amount of grass seed needed for one acre is
= 2 (100/5) = 40 pounds

So the no.of acres that can be planted with 240 pounds is
= 240/40 = 6

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20 Sep 2010, 19:11
No doubt that OA has to be A
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14 Oct 2010, 18:23
My backwards math:

1% of 240 is 2.4 pounds
2.4+2.4+2.4+2.4+2.4=12 pounds

12pounds of timothy/2 pounds needed per acre=6 acres
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Re: Five percent of a certain grass seed is timothy. If the amount of the [#permalink]

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03 Nov 2010, 23:57
cano wrote:
Five percent of a certain grass seed is timothy. If the amount of the mixture needed to plant one acre contains 2 pounds of timothy, how many acres can be planted with 240 pounds of the seed mixture?

A. 6
B. 12
C. 20
D. 24
E. 120

Explanation: Let's suppose Grass Seed=G, and Timothy=T.
And, we know that 5 percent of G is T (or T is 5 percent of G)
--> $$T= \frac{5}{100} * G =\frac{1}{20} * G = \frac{G}{20}$$, and $$G= 240$$, so --> $$T = \frac{240}{20} = 12$$ pounds.

We need $$2$$ pounds of T for $$1$$ Acre
==> $$1$$ pound of T for $$\frac{1}{2}$$ Acres
==> $$12$$ pounds of T for $$12*1/2$$ Acre --> $$6$$ Acres (Answer)
So, we can plant 6 Acres with 240 pounds of seed mixture (in other words with 12 pounds of Timothy).

Please! do post OA (if possible).
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Re: Five percent of a certain grass seed is timothy. If the amount of the [#permalink]

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07 Nov 2010, 20:50
cano wrote:
Five percent of a certain grass seed is timothy. If the amount of the mixture needed to plant one acre contains 2 pounds of timothy, how many acres can be planted with 240 pounds of the seed mixture?

A. 6
B. 12
C. 20
D. 24
E. 120

Timothy - 5; Total Grass seed - 100; which is same as Timothy - 1; Total Grass seed - 20;

For 1 acre; Timothy - 2; so Total Grass seed - 40 (From above)
For ? acre; Total Grass seed - 240
Since 240 is 6*40, we can plant 1*6 acres.
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Get started with Veritas Prep GMAT On Demand for $199 Veritas Prep Reviews Manager Joined: 01 Nov 2010 Posts: 181 Location: Zürich, Switzerland Followers: 2 Kudos [?]: 38 [0], given: 20 Re: Five percent of a certain grass seed is timothy. If the amount of the [#permalink] ### Show Tags 08 Nov 2010, 05:24 5% of 240 pounds is timothy which is 12 pounds. 2 pounds timothy for 1 acre land. Thus 12 pound timothy will siffuce for 6 acres. Answer:- A GMAT Club Legend Joined: 09 Sep 2013 Posts: 12204 Followers: 541 Kudos [?]: 151 [0], given: 0 Re: Five percent of a certain grass seed is timothy. If the amount of the [#permalink] ### Show Tags 01 Sep 2016, 07:15 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). Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________ Re: Five percent of a certain grass seed is timothy. If the amount of the [#permalink] 01 Sep 2016, 07:15 Similar topics Replies Last post Similar Topics: 2 A garden center sells a certain grass seed in 5-pound bags at$13.85 2 03 Jul 2016, 11:17
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