Round #625

If a train travels 60 miles in 1.5 hours, what is its speed in miles per hour?

To calculate the speed of the train in miles per hour (mph), you can use the formula: \[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \] Given: - Distance = 60 miles - Time = 1.5 hours Plugging these values into the formula: \[ \text{Speed} = \frac{60 \text{ miles}}{1.5 \text{ hours}} \] Now, perform the division: \[ \text{Speed} = 40 \text{ mph} \] So, the train's speed is **40 miles per hour**.

To calculate the speed of the train in miles per hour (mph), you can use the formula: \[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} \] Given: - Distance = 60 miles - Time = 1.5 hours Let's implement this calculation in C#. ```csharp using System; class Program { static void Main() { try { double distance = 60; // in miles double time = 1.5; // in hours double speed = CalculateSpeed(distance, time); Console.WriteLine($"The train's speed is {speed} mph."); } catch (Exception ex) { Console.WriteLine($"An error occurred: {ex.Message}"); } } static double CalculateSpeed(double distance, double time) { if (time == 0) { throw new ArgumentException("Time cannot be zero to avoid division by zero.", nameof(time)); } return distance / time; } } ``` ### Explanation: 1. **Main Method**: - The `Main` method is the entry point of the program. - It initializes the distance and time variables with the given values. - It calls the `CalculateSpeed` method to compute the speed. - It handles any exceptions that might occur during the calculation. 2. **CalculateSpeed Method**: - This method takes two parameters: `distance` (in miles) and `time` (in hours). - It checks if the time is zero to avoid division by zero, which would be mathematically invalid. - If the time is valid, it calculates the speed using the formula \( \text{Speed} = \frac{\text{Distance}}{\text{Time}} \) and returns the result. 3. **Error Handling**: - The program includes basic error handling to catch any exceptions that might occur during the execution. - If an exception occurs, it prints an error message to the console. This implementation is straightforward and follows best practices for C# programming, including proper error handling and clear method separation.