document.write( "Question 238350: a 2004 Pontiac Montana has an engine coolant system capacity of 10.01 liter. If the system is currently filled with a mixture that is 30% antifreeze, how much of it should be drained and replaced with pure antifreeze so that they system is filled with a mixture that is 50% antifreeze? \n" ); document.write( "
Algebra.Com's Answer #175141 by stanbon(75887)\"\" \"About 
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Pontiac Montana has an engine coolant system capacity of 10.01 liter. If the system is currently filled with a mixture that is 30% antifreeze, how much of it should be drained and replaced with pure antifreeze so that they system is filled with a mixture that is 50% antifreeze?
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\n" ); document.write( "Let \"x\" be the amount that should be drained and replaced.
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\n" ); document.write( "Equation:
\n" ); document.write( "0.30*10.01 - 0.30x + 1.00x = 0.50*10.01
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\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "30*10.01 + 70x = 50*10.01
\n" ); document.write( "70x = 20*10.1
\n" ); document.write( "x = 2.89 liters (amount that should be drained and replaced)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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