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Exercise 21

Avg difficulty 2.5

A 600-liter tank initially contains 200 liters of water containing 10 kilograms of salt. Supposed that water containing 0.1 kilograms of salt per liter flows into the top of the tank at a rate of 10 liters per minute. The water in the tank is kept well mixed, and 5 liters per minute are removed from the bottom of the tank. How much salt is in the tank when the tank is full?

Judson, The ODE Project, §1.5 First-Order Linear Equations, Exercise 21

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Adapted from The ODE Project © 2019–2025 Thomas W. Judson. Licensed under CC BY 4.0. Source: The ODE Project. Imported at revision 7935458.