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A tank is filled with 200 gallons of brine in which is dissolved 5 pounds of salt. Brine containing 0.1 pound of salt per gallon enters the tank at a rate of 2 gallons per minute, and the well-stirred mixture is drawn from the talk at the same rate.(a) Find the amount of salt in the tank at time .(b) How much salt is present in the tank after 20 minutes?
(c) How much salt is present after a long time? What is the concentration then?
Cognitive Restructuring
A psychotherapeutic process of learning to identify and dispute irrational or maladaptive thoughts known as cognitive distortions.
Systematic Desensitization
A therapeutic technique used to reduce phobia or anxiety through gradual exposure to the feared object or situation.
Enclosed Space
A physical area that is surrounded by boundaries which can be natural or man-made, limiting access and egress.
Psychotherapist
A professional who treats mental health issues by psychological rather than medical means, often through talking therapies.
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