Final answer:
The production cost of 7 devices, after adding labor and computing components costs and subtracting the savings on reusable material, is R3450.
Step-by-step explanation:
To determine the production cost of 7 devices, we need to add the labor cost, the cost of computing components, and then subtract the savings on reusable material. The given costs are labor R⁴¹⁴⁰, computing components R¹⁰³⁵, and savings on reusable material R¹⁷²⁵.
The total cost can be calculated as follows:
- Labor Cost: R⁴¹⁴⁰
- Computing Components Cost: R¹⁰³⁵
- Savings on Reusable Material: -R¹⁷²⁵
To find the final production cost, we do the following calculation:
Production Cost = (Labor Cost + Computing Components Cost) - Savings on Reusable Material
Production Cost = (R⁴¹⁴⁰ + R¹⁰³⁵) - R¹⁷²⁵
Production Cost = R(4140 + 1035) - R1725
Production Cost = R5175 - R1725
Production Cost = R3450
Thus, the production cost of 7 devices is R3450.