document.write( "Question 179076: A grocer combines coffee that costs $8.00 per pound with coffee that costs $3.00 per pound. how many pounds of each should be used to make 80 lbs of a blend that costs $5.00 per pound? i am suppose to have an equation for this also
\n" );
document.write( "thank you soo much for helping me out!! \n" );
document.write( "
Algebra.Com's Answer #134021 by Mathtut(3670)![]() ![]() ![]() You can put this solution on YOUR website! let x and y be the amount of $8 per pound coffee and $3 per pound coffee respectively \n" ); document.write( ": \n" ); document.write( "x+y=80...........eq 1 \n" ); document.write( "8x+3y=5(80)......eq 2 \n" ); document.write( ": \n" ); document.write( "rewrite eq 1 to x=80-y and plug it into eq 2 \n" ); document.write( ": \n" ); document.write( "8(80-y)+3y=400 \n" ); document.write( ": \n" ); document.write( "640-8y+3y=400 \n" ); document.write( ": \n" ); document.write( "-5y=-240 \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( " |