Consider three connected lakes, A, B, and C, where lake B has a volume of 2650 km3, and water flowsfrom lake A into lake B, and from lake B into lake C, both inflows and outflows at the same rate of525 km3/year. Suppose that at time t=0 (years), the pollutant concentration of lake B, caused by pastindustrial pollution that has now been ordered to cease, is five times that of lake A. If the outflowfrom lake B to lake C is perfectly mixed lake water, how long will it take to reduce the pollutionconcentration in lake B to twice that of lake A?Choose all correct answers.BApproximately 6.3 years.Approximately 4.4 years.Approximately 5 years.Approximately 8.3 years.Approximately 7 years.

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Answered: Consider three connected lakes, A, B,…

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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Consider three connected lakes, A, B, and C, where lake B has a volume of 2650 km, and water flows from lake A into lake B, and from lake B into lake C, both inflows and outflows at the same rate of 525 km2/year. Suppose that at time t=0 (years), the pollutant concentration of lake B, caused by past industrial pollution that has now been ordered to cease, is five times that of lake A. If the outflow from lake B to lake C is perfectly mixed lake water, how long will it take to reduce the pollution concentration in lake B to twice that of lake A? (Choose all correct answers) OA More than five years. OB Less than eight years. OC Less than six years. D D. More than 11 years.
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