- #1

jzachey

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## Homework Statement

A tank contains 1000L of brine with 15 Kg of dissolved salt. Pure water enters the tank at a rate of 10 L/Min. The soultion is kept thoroughtly mixed and drained from the tank at the same rate. How much salt is in the tank(a) after t minutes and (b) after 20 minutes

## Homework Equations

∫[itex]\frac{dy}{dt}[/itex]=(rate in)-(rate out)

## The Attempt at a Solution

A.)15e^(-t/200)

B.)12.3 Kg

-------Okay, I knew the answer to this but this isn't what I wanted to ask but I hope it can help you to help me.

Can someone help me find a formula on the ti 83 to give the answers faster?(so I can check) or a program/app that helps with mixture problems? (also known as separable equations used in differential equations in Calculus II)