document.write( "Question 349038: The local coffee shop combines two kinds of beans
\n" ); document.write( "to make a blended mixture of beans. If Ethiopian
\n" ); document.write( "Harrar beans cost $7.25 per pound, and Arabian
\n" ); document.write( "Mocha beans cost $13.70 per pound, how many
\n" ); document.write( "pounds of each should be used to make 3 pounds of
\n" ); document.write( "a blend that costs $10.26 per pound?
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Algebra.Com's Answer #249489 by josmiceli(19441)\"\" \"About 
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Let \"e\" = pounds of E. H. beans needed
\n" ); document.write( "Let \"a\" = pounds of A. M. beans needed
\n" ); document.write( "given:
\n" ); document.write( "(1) \"e+%2B+a+=+3\"
\n" ); document.write( "cost of \"e\" is \"7.25e\"
\n" ); document.write( "cost of \"a\" is \"13.7a\"
\n" ); document.write( "-----------------------------
\n" ); document.write( "(2) \"7.25e+%2B+13.7a+=+3%2A10.26\"
\n" ); document.write( "(2) \"7.25e+%2B+13.7a+=+30.78\"
\n" ); document.write( "Multiply both sides of (1) by \"7.25\"
\n" ); document.write( "and subtract from (2)
\n" ); document.write( "(2) \"7.25e+%2B+13.7a+=+30.78\"
\n" ); document.write( "(1) \"-7.25e+-+7.25a+=+-21.75\"
\n" ); document.write( "\"6.45a+=+9.03\"
\n" ); document.write( "\"a+=+1.4\"
\n" ); document.write( "\"e+=+3+-+1.4\"
\n" ); document.write( "\"e+=+1.6\"
\n" ); document.write( "1.4 pounds of A.M. and 1.6 pounds of E. H. are needed\r
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