Total Fixed Cost:

\[ FCt = D + I + RM + i \]

Where:

• \(FCt\) is the total fixed cost in currency (P/day).
• \(D\) is the depreciation in currency (P/day).
• \(I\) is the interest on investment in currency (P/day).
• \(RM\) is the repair and maintenance cost in currency (P/day).
• \(i\) is the insurance cost in currency (P/day).