A tank initially contains 500 liters of water. Water is added at a rate of 30 liters per minute for 10 minutes, then drained at a rate of 20 liters per minute for 15 minutes. How many liters of water are in the tank at the end?

Sun, 03 May 2026 10:49:08 +0000

**How A Tank’s Water Level Changes: A Clear Look at Inflows and Outflows** Ever wondered what happens when a tank starts with 500 liters of water, receives a steady inflow, then enters a drainage phase? This scenario reflects a real-world pattern seen in water management, agriculture, and industrial systems—common concerns in smart living, sustainability, and resource efficiency. As people track water usage patterns and climate awareness grows, this kind of calculated flow rate problem remains both practical and relevant across the US. ### Why This Tank Scenario Matches Real-Life Trends In recent years, water sustainability has emerged alongside household efficiency and infrastructure upgrades. Public interest has surged around monitoring systems in homes, farms, and public facilities—where inflow and outflow timing directly impact resource conservation. This type of flow calculation reflects how professionals optimize water storage and usage, balancing supply with consumption. It’s not just a math problem—it’s a modeled example of how controlled water systems maintain equilibrium.