document.write( "Question 626171: The capacity of an automobile cooling system is 16 quarts. It is half full of a 15% antifreeze solution. The owner is adding 2 gallons of a 90% solution (remember, 1 gallon = 4 quarts). When he is finished, what will the solution's percentage value be? \n" ); document.write( "

Algebra.Com's Answer #394010 by josmiceli(19441) $\"\"$ $\"About$

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$\"+16+\"$ qts x $\"+1%2F4+\"$ gal/qt = $\"+4+\"$ gal
\n" ); document.write( "The capacity is 4 gallons
\n" ); document.write( "It is half full, so
\n" ); document.write( "It has 2 gallons of 15% antifreeze
\n" ); document.write( " $\"+.15%2A2+=+.3+\"$ gallons antifreeze in tank
\n" ); document.write( "-----------------
\n" ); document.write( "The owner fills the tank by adding 2 gallons
\n" ); document.write( "of 90% antifreeze
\n" ); document.write( " $\"+.9%2A2+=+1.8+\"$ gallons of antifreeze
\n" ); document.write( "The total antifreeze in tank is then
\n" ); document.write( " $\"+.3+%2B+1.8+=+2.1+\"$ gal
\n" ); document.write( " $\"+2.1%2F+4+=+.525+\"$
\n" ); document.write( " $\"+.525%2A100+=+52.5+\"$
\n" ); document.write( "The solution's percentage will be 52.5% \n" ); document.write( "

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