Answer
True
Work Step by Step
During the time interval $\Delta t$, the change in the volume of solution in the tank is $\Delta V=(r_1-r_1)\Delta t$. Dividing this equation we get $\frac{\Delta V}{\Delta t}=r_2-r_1$. Hence, the statement is true.
Differential Equations and Linear Algebra (4th Edition)
by Goode, Stephen W.; Annin, Scott A.
Published by
Pearson
ISBN 10:
0-32196-467-5
ISBN 13:
978-0-32196-467-0
Chapter 1 - First-Order Differential Equations - 1.7 Modeling Problems Using First-Order Linear Differential Equations - True-False Review - Page 69: b
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