This is a Case study given to us for solving, in an accounting class. I need you

This is a Case study given to us for solving, in an accounting class. I need your help for solving this.
The is 2nd part of the course, focusing on Managerial accounting, so kindly, keep that in mind while focusing on reasoning.
please note that there’s no minimum requirement of words. You can answer as you like, just make sure you provide an explaination and clear workings