document.write( "Question 841304: Archie’s gas tank is
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\n" ); document.write( "If Archie adds 3 gallons of gas to the tank, it will be
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Algebra.Com's Answer #506757 by hamsanash1981@gmail.com(151)\"\" \"About 
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Let the total gallons to fill the tank be x
\n" ); document.write( "when 3 gallons of gas added to 1/3 of x it becomes 1/2 of x
\n" ); document.write( "=> x/3+3 = x/2
\n" ); document.write( "=> (x+9)/3 = x/2
\n" ); document.write( "=> 2x+18 = 3x
\n" ); document.write( "=> x=18
\n" ); document.write( "The capacity of the tank in gallons is 18.
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