A farmer can buy four types of plant food. Each barrel of mix A contains 30 pounds of phosphoric acid, 50 pounds of nitrogen, and 20 pounds of potash; each barrel of mix 8 contains 30 pounds of phosphoric acid, 75 pounds of nitrogen, and 30 pounds of potash; each barrel of mix C contains 30 pounds of phosphoric acid, 25 pounds of nitrogen, and 30 pounds of potash; and each barrel of mix D contains 60 pounds of phosphoric acid, 25 pounds of nitrogen, and 50 pounds of potash. Soll tests indicate that a particular field needs 1,050 pounds of phosphoric acid, 925 pounds of nitrogen, and 950 pounds of potash. How many barrels of each type of food should the farmer mix together to supply the necessary nutrients for the field?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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A farmer can buy four types of plant food. Each barrel of mix A contains 30 pounds of phosphoric acid, 50 pounds of nitrogen, and 20 pounds of potash; each barrel of mix 8 contains 30 pounds of
phosphoric acid, 75 pounds of nitrogen, and 30 pounds of potash; each barrel of mix C contains 30 pounds of phosphoric acid, 25 pounds of nitrogen, and 30 pounds of potash; and each barrel of
mix D contains 60 pounds of phosphoric acid, 25 pounds of nitrogen, and 50 pounds of potash. Soll tests indicate that a particular field needs 1,050 pounds of phosphoric acid, 925 pounds
of nitrogen, and 950 pounds of potash. How many barrels of each type of food should the farmer mix together to supply the necessary nutrients for the field?
Letx, be the number of barrels of Mix A x₂ be the number of barrels of Mix B, x, be the number of barrels of Mix C, and x, be the number of barrels of Mix D. Select the correct choice below and,
if necessary, in the answer boxes to complete your choice.
OA The unique solution is x,
X₂= and x
(Simplify your answer)
OB. There are multiple combinations of how the barrels should be filled. The combinations are obtated from the equations x, 5
(Simplify your answer. Type an expression using t as the variable.)
C. There is no solution.
and xt for
SIS
Transcribed Image Text:A farmer can buy four types of plant food. Each barrel of mix A contains 30 pounds of phosphoric acid, 50 pounds of nitrogen, and 20 pounds of potash; each barrel of mix 8 contains 30 pounds of phosphoric acid, 75 pounds of nitrogen, and 30 pounds of potash; each barrel of mix C contains 30 pounds of phosphoric acid, 25 pounds of nitrogen, and 30 pounds of potash; and each barrel of mix D contains 60 pounds of phosphoric acid, 25 pounds of nitrogen, and 50 pounds of potash. Soll tests indicate that a particular field needs 1,050 pounds of phosphoric acid, 925 pounds of nitrogen, and 950 pounds of potash. How many barrels of each type of food should the farmer mix together to supply the necessary nutrients for the field? Letx, be the number of barrels of Mix A x₂ be the number of barrels of Mix B, x, be the number of barrels of Mix C, and x, be the number of barrels of Mix D. Select the correct choice below and, if necessary, in the answer boxes to complete your choice. OA The unique solution is x, X₂= and x (Simplify your answer) OB. There are multiple combinations of how the barrels should be filled. The combinations are obtated from the equations x, 5 (Simplify your answer. Type an expression using t as the variable.) C. There is no solution. and xt for SIS
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