document.write( "Question 1121904: A gardener has 25 kilos of a mixture of fertilizer and weed killer. If 1 kilo of the mixture is replaced by weed killer, the result is a mixture that is 10% weed killer. What percent of the original mixture was weed killer?
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\n" ); document.write( "A sculptor wants to cast a bronze statue from an alloy that is 60% copper. He has 30 kilos of a 40% alloy. How much 80% copper alloy should he mix it with to obtain the 60% copper alloy?
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\n" ); document.write( "How many milliliters of pure acid must be added to 150 milliliters of a 30% acid solution to obtain a 40% acid solution?
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Algebra.Com's Answer #737909 by josgarithmetic(39620)\"\" \"About 
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\n" ); document.write( "A sculptor wants to cast a bronze statue from an alloy that is 60% copper. He has 30 kilos of a 40% alloy. How much 80% copper alloy should he mix it with to obtain the 60% copper alloy?
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\n" ); document.write( "\n" ); document.write( "x, number of kilograms of the 80% copper\r
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\n" ); document.write( "\n" ); document.write( "\"%2880x%2B40%2A30%29%2F%28x%2B30%29=60\"
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