Question 981497
soybean =x
cornmeal is 240-x
.12x+ .06 (240-x)= .09(240)
.12x + 14.4-.06x=21.6
.06x=7.2
multiply by 100
6x=720
x=120 pounds of soybean
240-x=120 pounds of cornmeal

This makes sense, since 9% is exactly in the middle between 6% of one and 12% of the other.