Posted by Cami on Saturday, October 23, 2010 at 3:52pm.
a=14% protein in soybean b=7% protein in cornmeal
how many pounds mixed together to get 280lb mixture that is 9% protein
a= ____lbs soybean
b= ____lbs cornmeal
Thank you from the bottom of my heart,

Looks like SCIENCE to me!  Writeacher, Saturday, October 23, 2010 at 4:39pm
Please type your subject in the School Subject box. Any other words, including obscure abbreviations, are likely to delay responses from a teacher who knows that subject well.

adult education  bobpursley, Saturday, October 23, 2010 at 4:55pm
Looks like a classical algebra problem to me.
280lbs=S+C weight equation
280*.09=.14S+.07C protein equation
How to solve?
I would multiply the top equation by .07, then subtract one equation from the other.
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