CSharp-Fundamentals-Intro-and-Basic-Syntax-Exercise 3. Vacation

Имам нужда от помощ, някой ако може да ми покаже къде ми е грешката в кода. Пробвах да реша задачата по 3 различни начина и всеки път ми дава 83/100. Благодаря предварително.

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

namespace _3_Vacation_2._0
{
class Program
{
static void Main(string[] args)
{
int groupCount = int.Parse(Console.ReadLine());
string groupType = Console.ReadLine();
string dayOfWeek = Console.ReadLine();
double singularPrice = 0;
double totalPrice = 0;

if (groupType == "Students")
{
if (dayOfWeek == "Friday")
{
singularPrice = 8.45;
}
else if (dayOfWeek == "Saturday")
{
singularPrice = 9.80;
}
else if (dayOfWeek == "Sunday")
{
singularPrice = 10.46;
}

if (groupCount >= 30)
{
totalPrice = (singularPrice * groupCount)*85/100;
}
else
{
totalPrice = singularPrice * groupCount;
}
}

else if (groupType == "Business")
{
if (dayOfWeek == "Friday")
{
singularPrice = 10.90;
}
else if (dayOfWeek == "Saturday")
{
singularPrice = 15.60;
}
else if (dayOfWeek == "Sunday")
{
singularPrice = 16;
}

if (groupCount >= 100)
{
totalPrice = singularPrice * (groupCount - 10);
}
else
{
totalPrice = singularPrice * groupCount;
}
}

else if (groupType == "Regular")
{
if (dayOfWeek == "Friday")
{
singularPrice = 15;
}
else if (dayOfWeek == "Saturday")
{
singularPrice = 20;
}
else if (dayOfWeek == "Sunday")
{
singularPrice = 22.5;
}

if (groupCount >= 10 && groupCount <= 20)
{
totalPrice = (singularPrice * groupCount) * 95 / 100;
}
else
{
totalPrice = singularPrice * groupCount;
}
}

Console.WriteLine($"Total price: {totalPrice:f2}");
}
}
}

Ето и още едно решение:

using System;

namespace ConsoleApp8
{
    class Program
    {
        static void Main(string[] args)
        {
            int people = int.Parse(Console.ReadLine());
            string type = Console.ReadLine();
            string day = Console.ReadLine();
            double price = 0;
            double totalPrice = 0;
            switch (type)
            {
                case "Students":
                    switch (day)
                    {
                        case "Friday":
                            price = 8.45;
                            break;
                        case "Saturday":
                            price = 9.80;
                            break;
                        case "Sunday":
                            price = 10.46;
                            break;
                    }
                    break;
                case "Business":
                    switch (day)
                    {
                        case "Friday":
                            price = 10.90;
                            break;
                        case "Saturday":
                            price = 15.60;
                            break;
                        case "Sunday":
                            price = 16;
                            break;
                    }
                    break;
                case "Regular":
                    switch (day)
                    {
                        case "Friday":
                            price = 15;
                            break;
                        case "Saturday":
                            price = 20;
                            break;
                        case "Sunday":
                            price = 22.50;
                            break;
                    }
                    break;
            }
            totalPrice = price * people;
            if (type=="Students" && people>=30)
            {
                totalPrice -= totalPrice * 0.15;
            }
            else if (type== "Business" && people>=100)
            {
                totalPrice = price * (people - 10);
            }
            else if (type=="Regular" && (people>=10 && people<=20))
            {
                totalPrice -= totalPrice * 0.05;
            }
            Console.WriteLine($"Total price: {totalPrice:f2}");
        }
    }
}