document.write( "Question 13554: Two hot dogs and one hamburger cost $3.39. Three hot dogs and three hamburgers cost $6.57. What is the cost of one hot dog? \n" ); document.write( "
Algebra.Com's Answer #6950 by LilSkittleMd(119)![]() ![]() ![]() You can put this solution on YOUR website! Let d=hotdogs; h=hamburger \n" ); document.write( "The two equations are \n" ); document.write( "2d+h=3.39 \n" ); document.write( "3d+3h=6.57 \n" ); document.write( "You can use the substitution method to solve this. Take the first equation and solve for h. The equation for that is: \n" ); document.write( "h=-2d+3.39 \n" ); document.write( "Susbstitute that into the second equation \n" ); document.write( "3d+3(-2d+3.39)=6.57 \n" ); document.write( "3d-6d+10.17=6.57 \n" ); document.write( "-3d=-3.6 \n" ); document.write( "d=1.2 \n" ); document.write( "The cost of one hotdog is $1.20 \n" ); document.write( " |