document.write( "Question 1113818: a coffee cost .75 less than a slice of pie. If it cost 11.25 for three slices of pie and two coffees, determine the price of a coffee and the price of a slice of pie \n" ); document.write( "
Algebra.Com's Answer #728910 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! Let n be the cost of a slice of pie; and n-0.75 be the price of coffee. Then: \n" ); document.write( "3n+2(n-0.75)=11.25 \n" ); document.write( "5n-1.50=11.25 \n" ); document.write( "5n=12.75 \n" ); document.write( "n=2.55 \n" ); document.write( "Pie is 2.55 a slice; and coffee is 1.80 a cup \n" ); document.write( "☺☺☺☺ \n" ); document.write( " |