document.write( "Question 236048: how many kilograms of water must be added to 10 kg of a 75% antifreeze solution in order to produce a 50% solution? \n" ); document.write( "
Algebra.Com's Answer #173803 by stanbon(75887)\"\" \"About 
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how many kilograms of water must be added to 10 kg of a 75% antifreeze solution in order to produce a 50% solution?
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\n" ); document.write( "Let \"x\" be the amount of water added.
\n" ); document.write( "Equation:
\n" ); document.write( "alcohol + alcohol = alcohol
\n" ); document.write( "0.75(10) + 0(x) = 0.50(10+x)
\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "75*10 = 50*10 + 50x
\n" ); document.write( "50x = 25*10
\n" ); document.write( "x = 5 kg (amount of water needed in the mixture)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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