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#1 Help Me ! » Need help with DEs problems » 2007-06-11 04:04:23

Icy950
Replies: 2

Hello
I'm taking 256Mth, I have many homework problems like the below one.
Any1 plz help me solve this problem? So I can have some kind of idea to solve the rest.
Thanks a lot

A large tank is partically filled with 100 gal of fliud in which 10 lbs of salt is dissolved. Brine containing 1/2 lb of salt per gallon is pumped into the tank at a rate of 6 gal/min. The well-mixed solution is then pumped out at a slower rate of 4 gal/min.  Find the number of pounds of salt in the tank after 25 mins.

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