<PRE><B>Question 86692</B>
WHAT YOU NEED IS X POUNDS OF $9 COFFEE ADDED TO (100-X) POUNDS OF $12 COFFEE TO EQUAL 100 POUNDS OF $11.25 COFFEE. SO WE MAKE THE EQUATION THUS:
9X+12(100-X)=100*11.25
9X+1200-12X=1125
-3X=1125-1200
-3X=-75
X=-75/-3
X=25 POUNDS OF $9 COFFEE.
100-25=75 POUNDS OF $12 COFFEE.
PROOF
9*25+12*75=1125
225+900=1125
1125=1125



</PRE>