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1. The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month . What is the age of their father ?
- A. 0% increase
- B. 0% increase
- C. 0% increase
- D. 0% increase
Answer: Option D
Explanation:
Let the initial salary be 100 tk.
Increase by 10% will imply = 100 + 100x10/100 = (100 + 10) = 110 tk.
Decrease by 10% will mean = 90% of 110 = 99
Hence the effective change is a decrease by = (100 - 99)% = 1%. (ans)
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