document.write( "Question 268267: 4 Cheeseburgers and two shakes cost a total of 7.90. Two shakes cost 15 cents more than one cheeseburger. How much is a cheeseburger and the shake? \n" ); document.write( "
Algebra.Com's Answer #196646 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
4c + 2s = 7.90\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "2s = c + .15\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "substituting ___ 4c + (c + .15) = 7.90 ___ 5c = 7.75 ___ c = 1.55\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "2s = (1.55) + .15 ___ s = .85
\n" ); document.write( "
\n" );