Question 165650
.8*25+1.20x=1.10(25+x)
20+1.20x=27.5+1.10x
1.20x-1.10x=27.5-20
.10x=7.5
x=7.5/.1
x=75 pounds of $1.20 coffee is used.
Proof:
20+1.20*75=1.10(25+75)
20+90=1.10*100
110=110