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Seed mixture X is 40 percent ryegrass and 60 percent [#permalink]
22 Jan 2005, 13:42
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Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ?