Posted by **Laura** on Saturday, August 16, 2008 at 9:28am.

Soybean meal is 12% protein; cornmeal is 6% protein. howmany pounds of each should be mixed together to get a 240 pound mixture that is 8% protein?

- Algebra -
**bobpursley**, Saturday, August 16, 2008 at 9:31am
Sum of protein constituents=total protein

.12S+.06P=240*(.08)

S + P=240

Those two equations will solve it.

- Algebra -
**bobpursley**, Saturday, August 16, 2008 at 10:12am
well, if

S+P=240, then S=240-P

then

.12S+.06P=240*.08 or

.12(240-P) + .06P=240*.08

solve for P

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