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A tank contains 4000 ers (L) of a solution consisting of 121 kg of salt dissolved in water Pure water is pumped into the tank at the rate of 7 L/s, and the mixture-kept uniform by string-pumped out at the same rate How long will be un only 11 kg of sad remains in the tank? twill take about seconds. (Round to the nearest second as needed)

A tank contains 4000 ers (L) of a solution consisting of 121 kg of salt dissolved in water Pure water is pumped into the tank at the rate of 7 L/s, and the mixture-kept uniform by string-pumped out at the same rate How long will be un only 11 kg of sad remains in the tank? twill take about seconds. (Round to the nearest second as needed)

Advanced Engineering Mathematics
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 4000 Hers (L) of a solution consisting of 121 kg of salt dissolved in water Pure water is pumped into the tank at the rate of 7 Ls, and the mixture-kept uniform by stringspumped out at the same rate How long will it be un only 11 kg of sail remain in the tank? will take about seconds. (Round to the nearest second as needed)
Transcribed Image Text:A tank contains 4000 Hers (L) of a solution consisting of 121 kg of salt dissolved in water Pure water is pumped into the tank at the rate of 7 Ls, and the mixture-kept uniform by stringspumped out at the same rate How long will it be un only 11 kg of sail remain in the tank? will take about seconds. (Round to the nearest second as needed)
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