A tank contains 200 liters of brine with 20 kg of salt in the solution. Brinecontaining 0.25 kg per liter of salt flows into the tank at the rate of 3 L/min, andthe mixture, kept uniform by stirring, flows out at the rate of 2 L/min. What isthe time when the concentration of salt becomes 0.117 kg/L?48 minutes28 minutes8 minutes68 minutes

Answered: Image /qna-images/answer/b4fd8821-d105-49b5-9cfe-8b038142973b.jpg

Answered: A tank contains 200 liters of brine…

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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Water is flowing into a tub for washing clothes. The table shows the rate at which the water flows, in gallons per minute. The tub initially had five gallons of water in it before the faucet was turned on. t, in minutes 0 0.5 1 1.5 2 2.5 3 3.5 Flow rate, in 0.5 1 1.2 1.4 1.7 2 gal/min 2.1 3 Use the information in this problem to determine the amount of water in the tub after the first 3 minutes have passed. a) Calculate the amount of water in the tub using left approximating rectangles. b) Calculate the amount of water in the tub using right approximating rectangles. c) Use the two answers above to determine the most accurate answer you can.
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A tank contains 3,000 L of brine with 12 kg of dissolved salt. Pure water enters the tank at a rate of 30 L/min. The solution is kept thoroughly mixed and drains from the tank at the same rate. (a) How much salt is in the tank after t minutes? y = kg (b) How much salt is in the tank after 20 minutes? (Round your answer to one decimal place.) y =
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