document.write( "Question 425515: How many pounds of chocolate worth $1.20 a pound must be mixed with 10 pounds of chocolate worth 90 cents a pound to produce a mixture worth $1.00 a pound? \n" ); document.write( "
Algebra.Com's Answer #296276 by mananth(16946)\"\" \"About 
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------------- cost ----------------quantity
\n" ); document.write( "chocolate A 0.9 ----------------10
\n" ); document.write( "chocolate B 1.2 ----------------x
\n" ); document.write( "Total 1 ---------------- 10+x\r
\n" ); document.write( "\n" ); document.write( "0.9*10+1.2*x=1(10+x)
\n" ); document.write( "9+1.2x=10+x
\n" ); document.write( "1.2x-x=10-9
\n" ); document.write( "0.2x=1
\n" ); document.write( "/0.2
\n" ); document.write( "x=5 pounds $1.2 chocolate A
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