document.write( "Question 1018268: The cooling system on Peters Ford F-150 truck contains 6 gallons of coolant that is 40% antifreeze (the rest being water). How much must be withdrawn and replaced with 100% pure antifreeze to bring the mixture to 50% antifreeze level (the percentage most often recommended)l? \n" ); document.write( "
Algebra.Com's Answer #634437 by stanbon(75887)\"\" \"About 
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The cooling system on Peters Ford F-150 truck contains 6 gallons of coolant that is 40% antifreeze (the rest being water). How much must be withdrawn and replaced with 100% pure antifreeze to bring the mixture to 50% antifreeze level (the percentage most often recommended)l?
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\n" ); document.write( "Equation:
\n" ); document.write( "active - active + active = active
\n" ); document.write( "0.40*6 - -0.40x + 1*x = 0.50*6
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\n" ); document.write( "40*6 - 40x + 100x = 50*6
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\n" ); document.write( "-10*6 +60x = 0
\n" ); document.write( "x = 1 gallon (amt. of antifreeze to withdraw and replace)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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