Into a 100-gal tank initially filled with freshwater flow 3 gal/min of saltwater containing 2lb of salt per gallon. The solution is kept uniform by stirring, flows out at the same rate. How many pounds of salt will there be in the tank at the end of: A. 1 hour and 40 minutes? B. 2hours? C. discuss how the volume of salt inside the tank is affected as time increases.

Into a 100-gal tank initially filled with freshwater flow 3 gal/min of saltwater containing 2lb of salt per gallon. The solution is kept uniform by stirring, flows out at the same rate. How many pounds of salt will there be in the tank at the end of: A. 1 hour and 40 minutes? B. 2hours? C. discuss how the volume of salt inside the tank is affected as time increases.

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

A. 1 hour and 40 minutes?

B. 2hours?

C. discuss how the volume of salt inside the tank is affected as time increases.

Rate of entering
(saltwater)= 3.gal
min
vol= 100 gal
Q = 0 lb salt
Rate of leaving
(saltwater)= 3.gal
min

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