Question 185116
Let x be the number of lbs selling for 1.30. 100-x lbs selling for .90
100 lbs selling for $1/lb costs $100.
.
1.3x+.9(100-x)=100
1.3x+90-.9x=100
0.4x=10
x=25 lbs
75 lbs selling for .90
.
Ed