2. The IT manager indicated that splitting the costs, as you have done in the calculations performed in Tab 2, does nothing to improve the bottom line. She said: "The amounts are relatively small and as it all comes from the same pot in the end, there is no need to split the costs, it just creates additional coding categories for the system." Explain why the calculation performed in Tab 2 is important. In your discussions, also indicate the benefit of accurate costing when trying to improve profit margins.