Paint Costs

Question

This works for test 1, 2, and 5
Why not other times?

-------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double colors = Convert.ToInt32(Console.ReadLine());
double cost = colors * 5 + 40;
double tax = (cost / 100) * 10;
double totalCost = cost + tax;
Console.Write(totalCost);
}
}
}

Answer 1

It says rounded up to nearest whole number

Answer 2

oh thanks ill try that

Answer 3

ayy it worked thanks