diff --git a/LuckySpin.Test/SpinServiceTest.cs b/LuckySpin.Test/SpinServiceTest.cs
index a5441c7..cf2b6c4 100644
--- a/LuckySpin.Test/SpinServiceTest.cs
+++ b/LuckySpin.Test/SpinServiceTest.cs
@@ -10,23 +10,38 @@ namespace LuckySpin.Test
 {
     public class SpinServiceTest
     {
-        [Fact] //BONUS: Refactor into a Theory that tests both a winning and losing spin
-        public void SpinService_CalculateAvgWins_WinningSpin()
+        [Theory] //BONUS: Refactor into a Theory that tests both a winning and losing spin
+        [InlineData(true)]
+        [InlineData(false)]
+        public void SpinService_CalculateAvgWins_WinningSpin(bool isWinning)
         {
             //Arrange - create your Mock elements; setup the mockRepo to return TestData
             var mockRepo = new Mock<ISpinRepository>();
             //TODO: Use the Setup() and Returns() methods of mockRepo
             //       to arrange for a consistent, expected output based on TestData
+            mockRepo.Setup(r => r.GetSpins()).Returns(SpinListData.GetSpins());
+            mockRepo.Setup(r => r.GetCount()).Returns(SpinListData.GetCount());
+
 
             var service = new SpinService(mockRepo.Object);
 
+            service.IsWinning = isWinning;
             //Act - run the method that you are testing and get a result
             double result = service.CalculateAvgWins();
 
             //Assert - compare the expected output from TestData to the method result
             // TODO: check the repo data for the number of previous spins and wins, add one winning spin
-                double wins = 1/*???*/, count=1/*???*/;
-                double expected = wins / count;
+            double count = 10 + 1;
+            double wins;
+            if (isWinning)
+            {
+                wins = 4 + 1;
+            }
+            else
+            {
+                wins = 4;
+            }
+            double expected = wins / count;
             Assert.Equal(expected, result);
         }
     }
diff --git a/LuckySpin/Services/SpinService.cs b/LuckySpin/Services/SpinService.cs
index 9ad3c3d..5b505a3 100644
--- a/LuckySpin/Services/SpinService.cs
+++ b/LuckySpin/Services/SpinService.cs
@@ -1,12 +1,14 @@
 using System;
+using System.Linq;
 using LuckySpin.Models;
 using LuckySpin.Repositories;
+
 namespace LuckySpin.Services
 {
     public class SpinService : ISpinService //Makes this class extend the Interface ISpinService
     {
         Random random = new Random();
-
+        public bool IsWinning;
         private ISpinRepository spinRepository;
         //Constructor with Dependency Injection
         public SpinService(ISpinRepository sr)
@@ -19,7 +21,9 @@ public SpinService(ISpinRepository sr)
         public double CalculateAvgWins()
         {
             //TODO: Write logic to use the "real" spinRepository NOT the test data
-            return .1; 
+            double wins = spinRepository.GetSpins().Count(s => s.IsWinning) + (IsWinning ? 1 : 0);
+            double spins = spinRepository.GetCount() + 1;
+            return wins / spins;
         }
 
         public Spin SpinIt(int luck)
@@ -28,13 +32,13 @@ public Spin SpinIt(int luck)
             a = random.Next(1, 10);
             b = random.Next(1, 10);
             c = random.Next(1, 10);
-
+            IsWinning = (a == luck || b == luck || c == luck);
             return new Spin()
             {
                 A = a,
                 B = b,
                 C = c,
-                IsWinning = (a == luck || b == luck || c == luck),
+                IsWinning = IsWinning,
                 Luck = luck
             };
         }