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Seed mixture X is 40 percent ryegrass and 60 percent

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Manager
Manager
Joined: 20 Jun 2012
Posts: 96
Location: United States
Concentration: Finance, Operations
GMAT 1: 650 Q50 V28
GMAT 2: 700 Q50 V35
Followers: 1

Kudos [?]: 16 [0], given: 42

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Re: Seed mixture X is 40 percent ryegrass and 60 percent [#permalink] New post 11 Nov 2013, 20:01
sondenso wrote:
Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 % fescue. If a mixture of X and Y contains 30% ryegrass, what percent of the weight of the mixture is X?

A. 10%
B. 33 1/3%
C. 40%
D. 50%
E. 66 2/3%



Its very simple ..

30/100(x+y)= 40/100(x) + 25/100(y)
after solving we'll get, y=2x ... and we know x + y = 100(Total mixture)

x = 33.33
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Re: Seed mixture X is 40 percent ryegrass and 60 percent   [#permalink] 11 Nov 2013, 20:01
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