a. I was just asuming it is a rate of change problem. I don't quite understand whether it is more exact to be considered as exponential decay equation.
By solving above equation from Saraphim,
[SIZE="4"]x(t) = 10e^{\frac{-1}{50}t}
I can get the amount of salt after 10 minutes is 8.19kg.
By...
thanks for your reply saraphim. I think that's my problem, I'm having difficulty to describe the question into an equation. I think once I' m able to form the equation I'm able to solve it, hopefully.
Homework Statement
a) A large tank initially holds a mixture of 100 litres of water and 10 kg of salt. Fresh water is pumped in at a rate of 2L/min. The mixture is kept uniform by stirring and is pumped out at a rate of 2L/min. If x is the amount of salt present at any time t minutes, find the...