Un réservoir est rempli d'eau à un débit de 3 litres par minute. Si le réservoir contient déjà 50 litres et peut contenir un maximum de 200 litres, combien de temps faudra-t-il pour remplir le réservoir ?

["Surrounded by Water: How Long It Takes to Fill a Tank at 3 Litres per Minute", "When filling a water reservoir, understanding how long it takes can be essential for planning, project management, or everyday use. Imagine a scenario where a tank is already holding 50 liters of water, with a steady filling rate of 3 liters per minute, and a maximum capacity of 200 liters. How long will it take to fill the tank completely? Let’s dive into the calculation.", "### The Current Situation\nThe tank starts with 50 liters. Its full capacity is 200 liters, meaning it needs:\n200 L – 50 L = 150 liters more to reach full capacity.", "Water flows in at a constant rate of 3 liters per minute.", "### How Long to Fill the Remaining Volume\nTo determine the time required, divide the remaining volume by the flow rate:\n[\n\ ext{Time} = \frac{\ ext{Remaining Volume}}{\ ext{Flow Rate}} = \frac{150 \ ext{ liters}}{3 \ ext{ L/min}} = 50 \ ext{ minutes}\n]", "### Final Thoughts\nIt will take 50 minutes to fill the reservoir completely, starting from 50 liters to 200 liters at a continuous flow of 3 liters per minute. This straightforward calculation highlights how simple yet powerful basic math can be in daily water management and engineering planning.", "Whether you're managing a household tank, planning irrigation, or designing a water storage system, knowing how long it takes to fill tanks accurately saves time and resources. Remember: rate, volume, and time are tightly linked—mastering them helps you control water flow effectively."]