IIT JAM 2025 Question 59: National income accounting

Consider the economy described by the following: $Y=C+I+G$ with $Y=5000$, $G=1000$, $T=1000$, and $C=250+0.75(Y-T)$, where $Y$, $C$, $I$, $G$, and $T$ are national income, private consumption spending, investment expenditure, government expenditure, and tax revenue respectively. In this economy, private saving is ________.