A tank contains 200 liters of brine with 20 kg of salt in solution. Brine containing 0.25 kg per liter of salt flows into the tank at the rate of 3 liters per minute, and the mixture, kept uniform by stirring, flows out at the rate of 2 liters/minute. Determine the time when the concentration of salt becomes 0.15 kg/liter. CHOICES: 48.94 minutes 28.94 minutes 38.94 minutes 18.94 minutes
A tank contains 200 liters of brine with 20 kg of salt in solution. Brine containing 0.25 kg per liter of salt flows into the tank at the rate of 3 liters per minute, and the mixture, kept uniform by stirring, flows out at the rate of 2 liters/minute. Determine the time when the concentration of salt becomes 0.15 kg/liter. CHOICES: 48.94 minutes 28.94 minutes 38.94 minutes 18.94 minutes
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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A tank contains 200 liters of brine with 20 kg of salt in solution. Brine containing 0.25 kg per liter of salt flows into the tank at the rate of 3 liters per minute, and the mixture, kept uniform by stirring, flows out at the rate of 2 liters/minute. Determine the time when the concentration of salt becomes 0.15 kg/liter.
CHOICES:
48.94 minutes
28.94 minutes
38.94 minutes
18.94 minutes
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