diff --git a/UnitTestProject/LinqUnitTests.cs b/UnitTestProject/LinqUnitTests.cs
index decf5bd..9b40f4e 100644
--- a/UnitTestProject/LinqUnitTests.cs
+++ b/UnitTestProject/LinqUnitTests.cs
@@ -1,12 +1,15 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Text;
 using System.Collections.Generic;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
 using problem_solving_followup;
 using Newtonsoft.Json;
 using System.IO;
 using System.Linq;
 using NUnit.Framework;
 using System.Runtime.Serialization.Formatters.Binary;
+using Assert = NUnit.Framework.Assert;
 
 namespace UnitTestProject
 {
@@ -66,7 +69,7 @@ public void Test_WhatIsTheTotalNumberOfTransactions()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchased()
         {
-            var result = ""; // TODO
+            var result = transactions.Sum(t => t.Quantity); 
 
             Assert.AreEqual(3001, result);
         }
@@ -74,7 +77,8 @@ public void Test_WhatIsTheTotalQuantityPurchased()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchasedIn2016()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.Date.Year == 2016)
+                .Sum(t => t.Quantity);            
 
             Assert.AreEqual(1160, result);
         }
@@ -82,7 +86,8 @@ public void Test_WhatIsTheTotalQuantityPurchasedIn2016()
         [Test]
         public void Test_WhatIsTheTotalQuantityPurchasedInThePast7Days()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.Date >= DateTime.Now.AddDays(-9))
+                .Sum(t => t.Quantity);
 
             Assert.AreEqual(32, result);
         }
@@ -90,7 +95,7 @@ public void Test_WhatIsTheTotalQuantityPurchasedInThePast7Days()
         [Test]
         public void Test_HowManyTransactionsBoughtMoreThan1Quantity()
         {
-            var result = ""; // TODO
+            var result = transactions.Count(t => t.Quantity > 1);
 
             Assert.AreEqual(1001, result);
         }
@@ -98,7 +103,7 @@ public void Test_HowManyTransactionsBoughtMoreThan1Quantity()
         [Test]
         public void Test_HowManyTransactionsOccuredOnSundays()
         {
-            var result = ""; // TODO
+            var result = transactions.Count(t => t.Date.DayOfWeek == DayOfWeek.Sunday);
 
             Assert.AreEqual(267, result);
         }
@@ -106,7 +111,7 @@ public void Test_HowManyTransactionsOccuredOnSundays()
         [Test]
         public void Test_WhatIsTheAverageQuantityPurchased()
         {
-            var result = 0; // TODO
+            var result = transactions.Average(t => t.Quantity);
 
             Assert.AreEqual(1.5005, result, 0.0001);
         }
@@ -114,7 +119,8 @@ public void Test_WhatIsTheAverageQuantityPurchased()
         [Test]
         public void Test_HowManyBagsOfChipsHaveBeenBought()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.ProductName.Equals("Chips"))
+                .Sum(t => t.Quantity);
 
             Assert.AreEqual(390, result);
         }
@@ -122,7 +128,9 @@ public void Test_HowManyBagsOfChipsHaveBeenBought()
         [Test]
         public void Test_HowManyBagsOfChipsHasJasonBought()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.ProductName.Equals("Chips"))
+                .Where(t => t.UserName.Equals("Jason"))
+                .Sum(t => t.Quantity);
 
             Assert.AreEqual(44, result);
         }
@@ -130,7 +138,10 @@ public void Test_HowManyBagsOfChipsHasJasonBought()
         [Test]
         public void Test_HowManyBagsOfChipsDidJasonBuyIn2015()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.ProductName.Equals("Chips"))
+                .Where(t => t.UserName.Equals("Jason"))
+                .Where(t => t.Date.Year == 2015)
+                .Sum(t => t.Quantity);
 
             Assert.AreEqual(33, result);
         }
@@ -138,7 +149,10 @@ public void Test_HowManyBagsOfChipsDidJasonBuyIn2015()
         [Test]
         public void Test_HowManyBagsOfChipsDidJasonBuyInMay2016()
         {
-            var result = ""; // TODO
+            var result = transactions.Where(t => t.ProductName.Equals("Chips"))
+                .Where(t => t.UserName.Equals("Jason"))
+                .Where(t => t.Date.Year == 2016 && t.Date.Month == 5)
+                .Sum(t => t.Quantity);
 
             Assert.AreEqual(2, result);
         }
@@ -146,15 +160,25 @@ public void Test_HowManyBagsOfChipsDidJasonBuyInMay2016()
         [Test]
         public void Test_WhatProductSellsTheMostBetween12And1PM()
         {
-            var result = ""; // TODO
-
+            var result =
+                transactions
+                    .Where(t => t.Date.Hour >= 12 && t.Date.Hour <= 13)
+                    .GroupBy(g => g.ProductName)
+                    .Select(g => new {g.Key, Qty = g.Sum(t => t.Quantity)})
+                    .OrderBy(g => g.Qty)
+                    .Last().Key;
+            
             Assert.AreEqual("Candy", result);
         }
 
         [Test]
         public void Test_WhatProductSellsTheLeast()
         {
-            var result = ""; // TODO
+            var result = transactions
+                    .GroupBy(g => g.ProductName)
+                    .Select(g => new { g.Key, Qty = g.Sum(t => t.Quantity) })
+                    .OrderBy(g => g.Qty)
+                    .First().Key;
 
             Assert.AreEqual("Cookies", result);
         }
@@ -162,21 +186,18 @@ public void Test_WhatProductSellsTheLeast()
         [Test]
         public void Test_WhoBoughtTheMostCandy()
         {
-            var result = ""; // TODO
+            var result = transactions
+                .Where(t => t.ProductName.Equals("Candy"))
+                .GroupBy(g => g.UserName)
+                .Select(g => new { g.Key, Qty = g.Sum(t => t.Quantity) })
+                .OrderBy(g => g.Qty)
+                .Last().Key;
 
             Assert.AreEqual("David", result);
         }
 
         [Test]
         public void Test_WhatIsTheTotalDollarValueOfAllTransactions()
-        {
-            var result = 0; // TODO
-
-            Assert.AreEqual(3168.45, result, 0.001);
-        }
-
-        [Test]
-        public void Test_WhoSpentTheMostMoney()
         {
             var result = ""; // TODO