Doing the Littlefield Simulation project for my OPM 101 class. I need to know how to find the answer for this question:

What is the minimum number of testers that could meet a demand of 19.01 orders per day? Your answer should be a whole number.

Here are the steps and times

Step 1 Prep: 2.8 hours

Step 2 Tester: 1.6 hours

Step 3 Centrifuge: 2.9 hours on average

Step 4 Back to tester: 2.6 hours

Let me know if you need any further information