document.write( "Question 4845: I'm stuck on this problem. I need it to be solved for me step by step.\r
\n" );
document.write( "\n" );
document.write( "Four oranges and five apples cost $3.56. Four oranges and three apples cost $2.76. Find the cost of an orange and the cost of an apple. \n" );
document.write( "
Algebra.Com's Answer #2348 by Abbey(339) ![]() You can put this solution on YOUR website! Let the cost of oranges be x \n" ); document.write( "Let the cost of apples be y\r \n" ); document.write( "\n" ); document.write( "Then: \n" ); document.write( "4x+5Y=3.56 \n" ); document.write( "4x+3Y=2.76\r \n" ); document.write( "\n" ); document.write( "subtract the second equation from the first \n" ); document.write( "2y=.80 \n" ); document.write( "divide both sides by 2 \n" ); document.write( "y=.40 \r \n" ); document.write( "\n" ); document.write( "put this back into either of the original equations to find out how much an orange costs \n" ); document.write( "4x+5(.40)=3.56 \n" ); document.write( "4x+2.00=3.56 \n" ); document.write( "4x=1.56 \n" ); document.write( "x=.39 cents\r \n" ); document.write( "\n" ); document.write( "check this answer by using the other equation: \n" ); document.write( "4(.39)+3(.40)=2.76 \n" ); document.write( "1.56+1.20=2.76\r \n" ); document.write( "\n" ); document.write( "This is true, so oranges cost .39 cents each and apples cost .40 cents each. \n" ); document.write( " \n" ); document.write( " |