document.write( "Question 257585: The solution in a 7 liter radiator system is 35% antifreeze. How much of the solution must be drained and replaced by a 95% antifreeze solution to obtain a 50% antifreeze solution? \n" ); document.write( "
Algebra.Com's Answer #189501 by stanbon(75887)\"\" \"About 
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The solution in a 7 liter radiator system is 35% antifreeze. How much of the solution must be drained and replaced by a 95% antifreeze solution to obtain a 50% antifreeze solution?
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\n" ); document.write( "Equation:
\n" ); document.write( "anti - anti + anti = anti
\n" ); document.write( "0.35*7 - 0.35x + 0.95x = 0.50*7
\n" ); document.write( "2.45 +0.60x = 3.5
\n" ); document.write( "0.60x = 1.05
\n" ); document.write( "x = 1.75 liters (amount drained and replaced)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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