Q. If ‘a’ is the base amount expenditure, ‘b’ is the increase in the operation cost eachyear over a period of’ 'n’ years, the total cost of maintenance is: (Solved)
1. a + (n + 1) b
2. a + (n - 1) b
3. a × (n - 1) b
4. a - (n - 1) b
- b. a + (n - 1) b