Respuesta :
The optimal number of service windows to minimize total cost will be 5 service windows.
How to calculate the optimal value?
The optimal number of service windows to minimize total cost will be calculated thus:
Cost = 20x + 25(20 - 5x)
Cost = 20x + 500 - 125x
Cost = 500 - 105x
For the minimum cost,
500 - 105x = 0
105x = 500
x = 500/105
x = 4.76 = 5
Therefore, the optimal number of service windows to minimize total cost will be 5 service windows.
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