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A tank has 40L of sewage runoff. It initially consists of 60% water and 40% pollutants. Another sewage runoff with 70% water and 30% pollutant is being added to the tank at a rate of 3L/min. As the tank is being filled, the solution is also being drained at a rate of 4L/min. How much pollutant is in the tank after 7 mins?

A tank has 40L of sewage runoff. It initially consists of 60% water and 40% pollutants. Another sewage runoff with 70% water and 30% pollutant is being added to the tank at a rate of 3L/min. As the tank is being filled, the solution is also being drained at a rate of 4L/min. How much pollutant is in the tank after 7 mins?

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A tank has 40L of sewage runoff. It initially consists of 60% water and 40% pollutants. Another sewage runoff with 70% water and 30% pollutant is being added to the tank at a rate of 3L/min. As the tank is being filled, the solution is also being drained at a rate of 4L/min. How much pollutant is in the tank after 7 mins?
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