document.write( "Question 1170720: The total cost of 10 gallons of regular paint and 15 gallons of deluxe paint is
\n" ); document.write( "$315. If the deluxe paint costs $6 more per gallon than the regular paint, what
\n" ); document.write( "is the cost for 20 gallons of regular paint? \n" ); document.write( "
Algebra.Com's Answer #795608 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "Instead of doing your problem for you, I'll do one exactly like it\r\n" );
document.write( "step by step.\r\n" );
document.write( "\r\n" );
document.write( "I'll do this one instead:\r\n" );
document.write( "

\n" ); document.write( "The total cost of 12 gallons of regular paint and 16 gallons of deluxe paint is
\n" ); document.write( "$480. If the deluxe paint costs $9 more per gallon than the regular paint, what
\n" ); document.write( "is the cost for 25 gallons of regular paint?
\r\n" );
document.write( "\r\n" );
document.write( "             | number| price|       |\r\n" );
document.write( "             |   of  |  per | total |\r\n" );
document.write( "             |gallons|gallon|  cost |\r\n" );
document.write( "-------------------------------------                 \r\n" );
document.write( "regular paint|  12   |  x   |  12x  | \r\n" );
document.write( "deluxe paint |  16   | x+9  |16(x+9)|\r\n" );
document.write( "-------------------------------------\r\n" );
document.write( "                       total| 480   |\r\n" );
document.write( "\r\n" );
document.write( "  12x + 16(x+9) = 480\r\n" );
document.write( "12x + 16x + 144 = 480\r\n" );
document.write( "      28x + 144 = 480\r\n" );
document.write( "            28x = 336\r\n" );
document.write( "              x = 12\r\n" );
document.write( "\r\n" );
document.write( "One gallon of regular paint costs $12, so\r\n" );
document.write( "25 gallons of regular paint costs 25x$12 = $300\r\n" );
document.write( "\r\n" );
document.write( "Now do your problem step-by-step the same exact way.\r\n" );
document.write( "\r\n" );
document.write( "Edwin
\n" ); document.write( "
\n" );