please do not copy other answers of the similar question from chegg those are all wrong

I need the graphs to solve it please solve this problem using graphs thank you :) really appreciate the help will give thumbs up if answered correctly

9.3. Consider the following batch growth data: You have available three tanks of different volumes: 900,600 , and 300 l. Given a flow rate of 100l/h, what configuration of tanks would maximize product formation