QUESTION 6 (20 Marks) "Modelling can often be thought of as a process in which one starts with the objective or ultimate model output (such as profit), and asks what drives or determines this output (e.g. profit is equal to revenue minus cost), and building the corresponding calculations (i.e. with revenue and cost as inputs and profit as a calculated quantity)" (Rees, 2015:146).

Consider a small plastic recycling business situation where the owner is trying to build a model to understand the drivers of their business. Below is the projected business plan and he approaches you to assist him to understand the drivers of his business model.

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