document.write( "Question 908268: how many pounds of tea worth $4.60 a pound should be mixed with tea worth $6.50 a pound to get 10 pounds of a mixture worth %5.74 a pound? \n" ); document.write( "
Algebra.Com's Answer #550931 by richwmiller(17219)\"\" \"About 
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a+b=10,
\n" ); document.write( "4.6*a+6.5*b=5.74*10
\n" ); document.write( "a=10-b
\n" ); document.write( "4.6*(10-b)+6.5*b=57.4
\n" ); document.write( "46.0-4.6b+6.5*b=57.4
\n" ); document.write( "1.9*b=11.4
\n" ); document.write( "b=6.0
\n" ); document.write( "a=10-b
\n" ); document.write( "a=4.0 lb. at $4.60
\n" ); document.write( "b=6.0 lb. at $6.50
\n" ); document.write( "check
\n" ); document.write( "4.6*4.0+6.5*6.0=5.74*10
\n" ); document.write( "18.4+39.0=57.4
\n" ); document.write( "57.4=57.4
\n" ); document.write( "ok\r
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