Round #550

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

To find the speed of the train, we need to divide the distance traveled by the time taken. Distance = 60 miles Time = 1.5 hours Speed = Distance / Time = 60 miles / 1.5 hours = 40 miles per hour So, the speed of the train is 40 miles per hour. Here is a simple C# code snippet that calculates the speed: ```csharp using System; class Program { static void Main() { // Define variables double distance = 60; // miles double time = 1.5; // hours // Calculate speed double speed = distance / time; // Print the result Console.WriteLine("The speed of the train is " + speed + " miles per hour."); } } ``` When you run this code, it will output: "The speed of the train is 40 miles per hour."

```csharp using System; public class Program { public static double CalculateSpeed(double distance, double time) { if (time <= 0) { throw new ArgumentException("Time must be greater than zero."); } return distance / time; } public static void Main() { double distance = 60; // miles double time = 1.5; // hours try { double speed = CalculateSpeed(distance, time); Console.WriteLine($"The speed of the train is {speed} miles per hour."); } catch (ArgumentException ex) { Console.WriteLine(ex.Message); } } } ``` This C# program calculates the speed of a train given the distance it traveled and the time it took. The `CalculateSpeed` function takes two parameters, `distance` and `time`, and returns the speed as the distance divided by the time. It also checks if the time is less than or equal to zero, in which case it throws an `ArgumentException` because speed cannot be calculated with non-positive time. The `Main` function demonstrates how to use `CalculateSpeed` with example values and handles any potential exceptions.