growth & decay (1 Viewer)

[echelon4]

came across a confusing question. NO idea how to work it out.

"a tank contains 100 litres of brine whose concentration is 3greams/litre. Three litres of brine whose concentration is 2grams/litre flow into the tank each minute and at the same time 3 litres of mixture flow out each minute

a) show that the quantity of salt, Q grams, in the tank at any time t is given by Q=200+100e^(-0.03t)"

It would be great If someone could explain the setting out of this question slowly.

THanks in advanced

 

[rama_v]

http://community.boredofstudies.org...l?highlight=tank+contains+100+litres+of+brine

If you have a difficult fitzpatrick question, chances are it has already been answered

 

[echelon4]

kool, thnx.

Next time i'll be sure to search the forum beforehand.