Amazon Area Manager I interview questions

I'll post more information when I get time.. just wanted to get the most recent math problem on here for anyone getting ready to interview soon. INBOUND FLOW QUESTION You are in charge of the department that recieves the product to building and stows it to the bin where it is accessible by the next department. You have two options on how to recieve and stow the product. Option One: You can recieve the product at 250uph and stow it at 100uph (units per labor hour). You must recieve it and stow it for the unit to count for the production. This process results in 1% error of units being stowed incorrectly. You can find and fox these errors at a rate of 20uph with what you believe is almost 100% accurancy. Option Two: You recieve and stow the product in a one step vs two. The rate for this process is 80uph for recieve and stow. This process results in 1.5% error and you can fix these errors at 20uph with 100% accuracy. 1. Which option would you select to process today's unit and why? 2. Does your answer change if you are told you must fully process 100,000 units today? If yes, why? 3. Does your answer change if you are told you have 15 associates today and you must produce the maximim amount of units possible? If yes, why? So, what they don't tell you (for those of you with zero warehouse exp) that Option one is a two step process, one peron has to recieve and one person has to stow. So, if you have 8 people, 2 have to recieve and 6 have to stow, etc. Good luck.