document.write( "Question 125079: Cofee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture? \n" ); document.write( "
Algebra.Com's Answer #91712 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 12X+9(100-X)=11.25*100 \n" ); document.write( "12X+900-9X=1125 \n" ); document.write( "3X=1125-900 \n" ); document.write( "3X=225 \n" ); document.write( "X=225/3 \n" ); document.write( "X=75 POUNDS OF $12 COFFEE BEANS. \n" ); document.write( "100-75=25 POUNDS OF $9 COFFEE. \n" ); document.write( "PROOF. \n" ); document.write( "12*75+9*25=1125 \n" ); document.write( "900+225=1125 \n" ); document.write( "1125=1125 \n" ); document.write( " \n" ); document.write( " |