document.write( "Question 770241: can you help me with this question :
\n" ); document.write( "A merchant has some coffee worth 80 cents and some worth 90 cents per pound. How many pounds of each should he use to make 100 pounds of a mixture worth 88 cents per pound? \n" ); document.write( "
Algebra.Com's Answer #469385 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Price ---------------- quantity
\n" ); document.write( "coffee type I 0.90 ---------------- x pounds
\n" ); document.write( "Coffee type II 0.80 ------ 100 - x pounds
\n" ); document.write( "Mixture 0.88 ---------------- 100
\n" ); document.write( " 100
\n" ); document.write( "0.9 x + 0.8 ( 100 - x ) = 88
\n" ); document.write( "0.9 x + 80 - 0.8 x = 88
\n" ); document.write( "0.9 x - 0.8 x = 88 - -80
\n" ); document.write( "0.1 x = 8
\n" ); document.write( "/ 0.1
\n" ); document.write( " x = 80 pounds 90 cents coffee type I
\n" ); document.write( " 20 pounds 80 cents Coffee type II
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\n" ); document.write( "m.ananth@hotmail.ca
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