Inflow and Outflow in a tank

How to solve using MATLAB

If given a maximum capacity of tank and Flow in equation and Flow out equation.There some initial volume of water. How can we calculate the maximum amount of volume at a given time (second).How can we calculate what is the maximum volume at a given time (seconds).

[Image Analyst]

What was wrong with the 3 or 4 prior duplicate postings on this?