Percentages

Let the initial income of the man be . Initial expenditure: of Initial savings: To simplify, assume: units Then: Now, income increases by 25%: Assumption: Expenditure increases by an amount equal to 10% \emph{of original income}. New savings: Increase in savings: Percentage increase in savings: Answer:

Formula for Percentage.
To calculate the percentage, use the formula: Substitute the given values:
Conclusion.
Thus, the student scored 75%.

Revenue in 2022 = ₹80 lakh.
Growth in 2023 = 25% over 2022 revenue.
Increase in revenue in 2023 = of ₹80 lakh lakh.
Revenue in 2023 = Revenue in 2022 + Increase in 2023 .
Alternatively, Revenue in 2023 = lakh.
Decline in 2024 = 10% compared to 2023 revenue.
Decrease in revenue in 2024 = of ₹100 lakh lakh.
Revenue in 2024 = Revenue in 2023 - Decrease in 2024 .
Alternatively, Revenue in 2024 = lakh.
So, the revenue in 2024 is ₹90 lakh.