A tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped into the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed solution is pumped out at 4 liters/min. Which of the following initial-value problems must be solved to find the amount of salt x= x(t) in the tank at time t?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
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A tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped
into the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed
solution is pumped out at 4 liters/min. Which of the following initial-value problems must be solved
to find the amount of salt x= x(t) in the tank at time t?
dx
(A
2x
x(0) = 20
25
dt
dx
4x
B
x(0) = 20
dt
50 +t
dx
5-
50 +t
x(0) = 20
dt
dx
x(0) = 20
dt
50 +t
Transcribed Image Text:A tank contains 50-liters of brine in which 20 grams of salt is dissolved. Pure water is being pumped into the tank at a rate of 5 liters/min., the solution is continuously stirred and the well-mixed solution is pumped out at 4 liters/min. Which of the following initial-value problems must be solved to find the amount of salt x= x(t) in the tank at time t? dx (A 2x x(0) = 20 25 dt dx 4x B x(0) = 20 dt 50 +t dx 5- 50 +t x(0) = 20 dt dx x(0) = 20 dt 50 +t
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