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NEC Civil · 2081 · Question 11

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:

GitBook practice — Set 9 (Poush, 2081)

A$$a + (n + 1)b$$
B$$a + (n - 1)b$$
C$$a \times (n - 1)b$$
D$$a \cdot (n - 1)b$$
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