document.write( "Question 838500:  I Need major help!
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document.write( "If 14 gallons of gasoline cost $43.12, find the cost of 35 gallons of gasoline. \n" );
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| Algebra.Com's Answer #505121 by mxgirl22(39)     You can put this solution on YOUR website! \n" ); document.write( "If 14 gallons of gasoline cost $43.12, find the cost of 35 gallons of gasoline. \n" ); document.write( "---------------------------------------------------------------------------\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "1st) Set up a proportion. Make sure that both ratios/fractions have the same things on top and bottom. If you put money on the top of one, the other has to have money on the top as well.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Let x= Cost of 35 gallons of gasoline\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "$43.12/14 gallons = x/35 gallons\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "------------------------------------------------------- \n" ); document.write( "2nd.) Cross Multiply and solve for \"x\".\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "$43.12/14 gallons = x/35 gallons \n" ); document.write( "14x=$43.12(35) \n" ); document.write( "14x=$1509.20 \n" ); document.write( "14x/14=$1509.20/14 \n" ); document.write( "x=$107.80\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "------------------------------------------------------- \n" ); document.write( "3rd.) Answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "35 gallons of gasoline will cost $107.80 \n" ); document.write( " |