math

soybean meal is 18% protein; cornmeal is 9% protein. how many pounds of each should be mixed together in order to get 360-lb mixture that is 14%
How many pounds of cornmeal should be in the mixture? 200
how many lbs of soybean meal should be in the mixture? 160
can someone tell me if I have this right?

1. 👍 0
2. 👎 0
3. 👁 66
1. let x = pounds of soybean meal
let y = pounds of cornmeal

There should be a total of 360 pounds. Therefore, x+y = 360

The protein % is .14. Out of 360 pounds, that would be 360*.14 = 50.4

Therefore, .18x + .09y = 50.4

substitution:

x=360-y

.18(360-y) + .09y = 50.4
64.8 - .18y + .09y = 50.4
-.09y = -14.4
y = 160

x+y = 360
x+160 = 360
x = 200

200 pounds of soybean meal
160 pounds of cornmeal

Checking my work:

.18x + .09y = 50.4
.18*200 + .09*160 = 50.4
50.4 = 50.4

1. 👍 0
2. 👎 0
posted by Marth

Similar Questions

1. math

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

asked by Nick HELP PLSSSS on May 27, 2010
2. Math Algebra 1a

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

asked by Nick on May 27, 2010
3. algebra 1a

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

asked by Raj on May 27, 2010
4. Math

Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein? Cornmeal-how many pounds:__________ Soybean meal-how many pounds:______

asked by Raj on May 27, 2010
5. algebra

Soybean meal is 18% protein: cornmeal is 9% how many pounds of each should be mixed together in order to ge a 360 pound mixutre that is 13% protein: I get 200 cornmeal 160 soybean meal I think I put this backwards.

asked by Help on September 10, 2009
6. Math

Soybean meal is 18% protein; cornmeal is 9% protein. How many pound of each should mised together in order to get 560-lb mixture that is 13% protein? How many pounds of the cornmeal should be in the mixture? How many pounds of the

asked by Danie on June 28, 2010
7. math

soybean meal is 18% protein, and cornmeal is 9% protein. How many pounds of each should be mixed together in order to get 360lb mixture that is 17% protein. how many lbs should be cornmeal and how many lbs should be soybean be?

asked by karen on September 12, 2009
8. math

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? How many pound of cornmeal should be in the mixture? How many pounds of

asked by sara on August 24, 2008
9. algebra

soilbean meal is 18% protein, cornemeal is 9% protein ow many pounds o each should be mixed together in oder to get 360lbs. mixture that is 14 protein? How pounds of cornmeal do you need and how many pounds of soybean do you need?

asked by Louren on July 6, 2010
10. math

soybean meal is 12% protein; cornmeal is 6% protein.How many pounds of each should be mixed together in order to get 240-lb mixture that is 10% protein% How many pounds of the cornmeal should be in the mixture?_____pounds How many

asked by joe on July 18, 2009

More Similar Questions