A tank contains 800 liters of fresh water. Brine containing 2.5 N/L of salt enters the tank at 20 L/min, and the mixture, kept uniform by stirring, runs out at 30 L/min. When will the amount of salt in the mixture be 644.5 N? 54.5 minutes 30 minutes 40 minutes 50 minutes

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.3: Equations With Fractional Coefficient
Problem 6E
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A tank contains 800 liters of fresh water. Brine containing 2.5 N/L of salt enters
the tank at 20 L/min, and the mixture, kept uniform by stirring, runs out at 30
L/min. When will the amount of salt in the mixture be 644.5 N?
54.5 minutes
30 minutes
40 minutes
50 minutes
Transcribed Image Text:A tank contains 800 liters of fresh water. Brine containing 2.5 N/L of salt enters the tank at 20 L/min, and the mixture, kept uniform by stirring, runs out at 30 L/min. When will the amount of salt in the mixture be 644.5 N? 54.5 minutes 30 minutes 40 minutes 50 minutes
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