document.write( "Question 893619: 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 ? \n" ); document.write( "
Algebra.Com's Answer #541384 by Alan3354(69443)\"\" \"About 
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60 is the average of 40 and 80 --> equal amounts
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