document.write( "Question 1157405: he needs to make 60 liters of a 36% acid solution to test a new product. His supplier only ships a 10% and 40% solution. he decides to make the 36% solution by mixing the 10% solution with the 40% solution. how much of the 10% solution will he need to use \n" ); document.write( "

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he needs to make 60 liters of a 36% acid solution to test a new product. His supplier only ships a 10% and 40% solution. he decides to make the 36% solution by mixing the 10% solution with the 40% solution. how much of the 10% solution will he need to use
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\n" ); document.write( "Similar problem:
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\n" ); document.write( "Birdseed costs $0.56 a pound and sunflower seeds cost $0.86 a pound. Angela Leinenbachs' pet store wishes to make a 40-pound mixture of birdseed and sunflower seeds that sells for $0.75 per a pound. How many pounds of each type of seed should she use?
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\n" ); document.write( "b + s = 40 --- total mix
\n" ); document.write( "56b + 86s = 40*75 ---- cost in cents \n" ); document.write( "

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