A 120-gallon tank initially contains 90 lbs of salt dissolved in 90 gal of water. Brine containing 2 Ib/gal of salt flows into the tank at the rate of 4 gal/min, and the mixture flows out of the tank at the rate of 3 gal/min a) Write down the expression for the amount of salt in the tank at any time t. b) When is the tank full? c) How much salt does the tank contain when it is full?

A 120-gallon tank initially contains 90 lbs of salt dissolved in 90 gal of water. Brine containing 2 Ib/gal of salt flows into the tank at the rate of 4 gal/min, and the mixture flows out of the tank at the rate of 3 gal/min a) Write down the expression for the amount of salt in the tank at any time t. b) When is the tank full? c) How much salt does the tank contain when it is full?

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.7: More On Inequalities

Problem 44E

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