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Sagot :
Buford should use 7.5 pounds of the 50% corn bag.
How do we solve a system of linear equations from word problems?
A system of linear equation is an equation containing two different equations with variables and the coefficient.
From the given information, let:
- The weight of the bag containing 50% corn be = x
- The weight of the bag containing 90% corn be = y
Sp, we can a system of a linear equation that says:
x + y = 30
0.5x + 0.9y = 0.8(30)
Using elimination method
x + y = 30
-
x - 1.8y = -48
0 - 0.8y = -18
y = 18/0.8
y = 22.5
From x + y = 30
x = 30 - 22.5
x = 7.5
Therefore, we can conclude that he should use 7.5 pounds of the 50% corn bag.
Learn more about the system of the linear equations here:
https://brainly.com/question/2226590
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