document.write( "Question 473852: a merchant has coffee worth $50 a pound that she wants to mix with 90 pounds of coffee worth $80 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $50 coffee should be used? \n" ); document.write( "
Algebra.Com's Answer #324999 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! a merchant has coffee worth $50 a pound that she wants to mix with 90 pounds of coffee worth $80 a pound to get a mixture that can be sold for $70 a pound. How many pounds of the $50 coffee should be used?Equation: \n" ); document.write( "value + value = value \n" ); document.write( "50x + 80*90 = 70(x+90) \n" ); document.write( "----- \n" ); document.write( "50x + 80*90 = 70x + 70*90 \n" ); document.write( "---- \n" ); document.write( "20x = 10*90 \n" ); document.write( "x = 45 lbs (amt. of $50 coffee needed) \n" ); document.write( "=============================== \n" ); document.write( "Cheers, \n" ); document.write( "stan H. \n" ); document.write( " \n" ); document.write( " |