soybean is 16% protien . corn is 8% protien. how many pounds of each should be mixed together in order to get 320 lb mixture that is 12% protien.

how many pounds of soybean

how many pounds of corn

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- August 17th 2010, 12:08 PMmafai44percents
soybean is 16% protien . corn is 8% protien. how many pounds of each should be mixed together in order to get 320 lb mixture that is 12% protien.

how many pounds of soybean

how many pounds of corn - August 17th 2010, 12:36 PMmasters

Hi mafai44,

Let x = pounds of soybeans needed.

Let y = pounds of corn needed.

[1] x + y = 320

[2] .16x + .08y = .12(320)

From [1] y = 320 - x

[2].16x + .08(320 - x) = .12(320)

16x + 8(320 - x) = 12(320)

16x + 2560 - 8x = 3840

8x = 1280

x = 160 pounds of soybeans needed

From [1] y = 320 - 160 = 160 pounds of corn needed