document.write( "Question 704628: Having issues solving these 2 problems:
\n" ); document.write( "1) How many kilograms of antifreeze must be added to 4 kilograms of a 10% antifreeze solution to produce a 20 % solution?\r
\n" ); document.write( "\n" ); document.write( "2) How many grams of water must be evaporated from 10 grams of a 40% antiseptic solution to produce a 50% solution. \n" ); document.write( "
Algebra.Com's Answer #434192 by mananth(16946)\"\" \"About 
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-------------- percent ---------------- Amount
\n" ); document.write( "Antifreeze solution 10 ---------------- 4 kg
\n" ); document.write( "Antifreeze 100 ---------------- x kg
\n" ); document.write( "Mixture 20 ---------------- 4 + x kg
\n" ); document.write( "
\n" ); document.write( "10*4+100x=20(4+ x)
\n" ); document.write( "40+100 x=80+20 x
\n" ); document.write( "100x-20 x=-40+ 80
\n" ); document.write( "80 x = 40
\n" ); document.write( "/ 80
\n" ); document.write( "x = 0.5 kg Antifreeze \r
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\n" ); document.write( "\n" ); document.write( "100 grams solution contains 60 gms water
\n" ); document.write( "600=50(10+x)
\n" ); document.write( " 600=500+50x
\n" ); document.write( "100=50x
\n" ); document.write( "x=2 gms of water has to be removed
\n" ); document.write( "m.ananth@hotmail.ca
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