Khader’s monthly salary was Rs P in the year 2005. His salary in 2006 was Rs (P + 1000).
Khader’s monthly salary increased by Rs 1000 in the year 2006 than in 2005.
Step 1: Write what each year’s salary means.
In 2005, salary = \(P\)
Step 2: Write the next year’s salary.
In 2006, salary = \(P + 1000\)
Step 3: Find the increase.
Increase = (2006 salary) − (2005 salary)
= \((P + 1000) - P\)
Step 4: Simplify.
= \(P + 1000 - P\)
= \(1000\)
Conclusion: The salary increased by \(\text{Rs }1000\) from 2005 to 2006.
Quick check with numbers (optional):
If \(P = 20{,}000\), then 2006 salary = \(20{,}000 + 1000 = 21{,}000\).
Increase = \(21{,}000 - 20{,}000 = 1{,}000\) ✔️