Soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280-lb mixture that is 9% protein?

Question

amistre64 · Answer

we could work it all out or just use a compact formula; ill use the formula :)

soy = 280(.09-.07)/(.14-.07)

amistre64 · Answer

and corn = 280 - soy

amistre64 · Answer

i get 80 soy leaving 100 for corn; but you might wanna dbl chk

amistre64 · Answer

..200 for corn lol

lalaly · Answer

s+c=280
The total amount of protein must equal 9% of 280,
0.14s + 0.07c = 0.09(280)
 
solve using elimination or substitution

amistre64 · Answer

we dbl chk by multiplying the amount(%)s and see if they match

80(.14) + 200(.07) = 280(.09)
             11.2 + 14 = 25.2
                      25.2 = 25.2

anonymous · Answer

so it would be 80 lb for soybean & 100 lb for Cornmeal?

amistre64 · Answer

80 for soy; which leaves 200 for corn ... for a total of 280

anonymous · Answer

ok