exercism.org/csharp/cars-assemble/CarsAssemble.cs

using System;

static class AssemblyLine
{
    public static double SuccessRate(int speed)
    {
        throw new NotImplementedException("Please implement the (static) AssemblyLine.SuccessRate() method");
    }
    
    public static double ProductionRatePerHour(int speed)
    {
        throw new NotImplementedException("Please implement the (static) AssemblyLine.ProductionRatePerHour() method");
    }

    public static int WorkingItemsPerMinute(int speed)
    {
        throw new NotImplementedException("Please implement the (static) AssemblyLine.WorkingItemsPerMinute() method");
    }
}