document.write( "Question 161533: A store owner has 12 pounds of pasta worth 70 cents a pound. She wants to mix it with pasta worth 45 cents a pound so that the total mixture can be sold for 55 cents a pound ( without any gain or loss). How much of the 45 cent pasta must she use? \n" ); document.write( "
Algebra.Com's Answer #118999 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! .70*12+.45x=.55(12+x) \n" ); document.write( "8.4+.45x=6.6+.55x \n" ); document.write( ".45x-.55x=6.6-8.4 \n" ); document.write( ".1x=1.8 \n" ); document.write( "x=1.8/.1 \n" ); document.write( "x=18 pounds of the $.45 pasta is needed. \n" ); document.write( "Proof: \n" ); document.write( ".70*12+.45*18=.55(12+18) \n" ); document.write( "8.4+8.1=.55*30 \n" ); document.write( "16.5=16.5 \n" ); document.write( " |