1.

If ‘a’ is the base amount expenditure, ‘b’ is the increase in the operation cost each year over a period of’ 'n’ years, the total cost of maintenance is:$?

A. a + (n + 1) b
B. a + (n - 1) b
C. a √ó (n - 1) b
D. a - (n - 1) b
Answer» C. a ‚àö√≥ (n - 1) b


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