diff --git a/Sprint-3/todo-list/index.html b/Sprint-3/todo-list/index.html
index 4d12c4654..835636eff 100644
--- a/Sprint-3/todo-list/index.html
+++ b/Sprint-3/todo-list/index.html
@@ -4,11 +4,13 @@
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
   <title>ToDo List</title>
+
   <link rel="stylesheet" href="style.css" />
   <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css" rel="stylesheet">
 
   <script type="module" src="script.mjs"></script>
 </head>
+
 <body>
   <div class="todo-container">
     <h1>My ToDo List</h1>
@@ -18,23 +20,28 @@ <h1>My ToDo List</h1>
       <button id="add-task-btn">Add</button>
     </div>
 
-    <ul id="todo-list" class="todo-list">      
-    </ul>
+    <ul id="todo-list" class="todo-list"></ul>
+
+    <!-- New button added for the exercise -->
+    <button id="delete-completed-btn">Delete completed tasks</button>
 
-    <!-- 
-      This is a template for the To-do list item. 
-      It can simplify the creation of list item node in JS script.
-    -->
+    <!-- Template for todo items -->
     <template id="todo-item-template">
-      <li class="todo-item"> <!-- include class "completed" if the task completed state is true -->
+      <li class="todo-item">
         <span class="description">Task description</span>
+
         <div class="actions">
-          <button class="complete-btn"><span class="fa-solid fa-check" aria-hidden="true"></span></button>
-          <button class="delete-btn"><span class="fa-solid fa-trash" aria-hidden="true"></span></button>
+          <button class="complete-btn">
+            <span class="fa-solid fa-check" aria-hidden="true"></span>
+          </button>
+
+          <button class="delete-btn">
+            <span class="fa-solid fa-trash" aria-hidden="true"></span>
+          </button>
         </div>
       </li>
     </template>
 
   </div>
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/Sprint-3/todo-list/script.mjs b/Sprint-3/todo-list/script.mjs
index ba0b2ceae..9b3577cd6 100644
--- a/Sprint-3/todo-list/script.mjs
+++ b/Sprint-3/todo-list/script.mjs
@@ -1,4 +1,4 @@
-// Store everything imported from './todos.mjs' module as properties of an object named Todos 
+// Store everything imported from './todos.mjs' module as properties of an object named Todos
 import * as Todos from "./todos.mjs";
 
 // To store the todo tasks
@@ -8,19 +8,23 @@ const todos = [];
 window.addEventListener("load", () => {
   document.getElementById("add-task-btn").addEventListener("click", addNewTodo);
 
+  document
+    .getElementById("delete-completed-btn")
+    .addEventListener("click", deleteCompletedTodos);
+
   // Populate sample data
-  Todos.addTask(todos, "Wash the dishes", false); 
+  Todos.addTask(todos, "Wash the dishes", false);
   Todos.addTask(todos, "Do the shopping", true);
 
   render();
 });
 
-
-// A callback that reads the task description from an input field and 
+// A callback that reads the task description from an input field and
 // append a new task to the todo list.
 function addNewTodo() {
   const taskInput = document.getElementById("new-task-input");
   const task = taskInput.value.trim();
+
   if (task) {
     Todos.addTask(todos, task, false);
     render();
@@ -29,6 +33,11 @@ function addNewTodo() {
   taskInput.value = "";
 }
 
+function deleteCompletedTodos() {
+  Todos.deleteCompleted(todos);
+  render();
+}
+
 // Note:
 // - Store the reference to the <ul> element with id "todo-list" here
 //   to avoid querying the DOM repeatedly inside render().
@@ -45,12 +54,11 @@ function render() {
   });
 }
 
-
 // Note:
 // - First child of #todo-item-template is a <li> element.
 //   We will create each ToDo list item as a clone of this node.
 // - This variable is declared here to be close to the only function that uses it.
-const todoListItemTemplate = 
+const todoListItemTemplate =
   document.getElementById("todo-item-template").content.firstElementChild;
 
 // Create a <li> element for the given todo task
@@ -58,16 +66,17 @@ function createListItem(todo, index) {
   const li = todoListItemTemplate.cloneNode(true); // true => Do a deep copy of the node
 
   li.querySelector(".description").textContent = todo.task;
+
   if (todo.completed) {
     li.classList.add("completed");
   }
 
-  li.querySelector('.complete-btn').addEventListener("click", () => {
+  li.querySelector(".complete-btn").addEventListener("click", () => {
     Todos.toggleCompletedOnTask(todos, index);
     render();
   });
-    
-  li.querySelector('.delete-btn').addEventListener("click", () => {
+
+  li.querySelector(".delete-btn").addEventListener("click", () => {
     Todos.deleteTask(todos, index);
     render();
   });
diff --git a/Sprint-3/todo-list/todos.mjs b/Sprint-3/todo-list/todos.mjs
index f17ab6a25..d279f576a 100644
--- a/Sprint-3/todo-list/todos.mjs
+++ b/Sprint-3/todo-list/todos.mjs
@@ -26,4 +26,13 @@ export function toggleCompletedOnTask(todos, taskIndex) {
   if (todos[taskIndex]) {
     todos[taskIndex].completed = !todos[taskIndex].completed;
   }
+}
+
+// NEW FUNCTION
+export function deleteCompleted(todos) {
+  for (let i = todos.length - 1; i >= 0; i--) {
+    if (todos[i].completed) {
+      todos.splice(i, 1);
+    }
+  }
 }
\ No newline at end of file
diff --git a/Sprint-3/todo-list/todos.test.mjs b/Sprint-3/todo-list/todos.test.mjs
index bae7ae491..c6f30b525 100644
--- a/Sprint-3/todo-list/todos.test.mjs
+++ b/Sprint-3/todo-list/todos.test.mjs
@@ -13,7 +13,7 @@ function createMockTodos() {
     { task: "Task 1 description", completed: true },
     { task: "Task 2 description", completed: false },
     { task: "Task 3 description", completed: true },
-    { task: "Task 4 description", completed: false },        
+    { task: "Task 4 description", completed: false },
   ];
 }
 
@@ -29,10 +29,10 @@ describe("addTask()", () => {
   });
 
   test("Should append a new task to the end of a ToDo list", () => {
-
     const todos = createMockTodos();
     const lengthBeforeAddition = todos.length;
     Todos.addTask(todos, theTask.task, theTask.completed);
+
     // todos should now have one more task
     expect(todos).toHaveLength(lengthBeforeAddition + 1);
 
@@ -42,7 +42,6 @@ describe("addTask()", () => {
 });
 
 describe("deleteTask()", () => {
-
   test("Delete the first task", () => {
     const todos = createMockTodos();
     const todosBeforeDeletion = createMockTodos();
@@ -53,7 +52,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[1]);
     expect(todos[1]).toEqual(todosBeforeDeletion[2]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[3]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[3]);
   });
 
   test("Delete the second task (a middle task)", () => {
@@ -66,7 +65,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[0]);
     expect(todos[1]).toEqual(todosBeforeDeletion[2]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[3]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[3]);
   });
 
   test("Delete the last task", () => {
@@ -79,7 +78,7 @@ describe("deleteTask()", () => {
 
     expect(todos[0]).toEqual(todosBeforeDeletion[0]);
     expect(todos[1]).toEqual(todosBeforeDeletion[1]);
-    expect(todos[2]).toEqual(todosBeforeDeletion[2]);        
+    expect(todos[2]).toEqual(todosBeforeDeletion[2]);
   });
 
   test("Delete a non-existing task", () => {
@@ -94,11 +93,11 @@ describe("deleteTask()", () => {
 });
 
 describe("toggleCompletedOnTask()", () => {
-
   test("Expect the 'completed' property to toggle on an existing task", () => {
     const todos = createMockTodos();
     const taskIndex = 1;
     const completedStateBeforeToggle = todos[taskIndex].completed;
+
     Todos.toggleCompletedOnTask(todos, taskIndex);
     expect(todos[taskIndex].completed).toEqual(!completedStateBeforeToggle);
 
@@ -111,13 +110,12 @@ describe("toggleCompletedOnTask()", () => {
     const todos = createMockTodos();
     const todosBeforeToggle = createMockTodos();
     Todos.toggleCompletedOnTask(todos, 1);
-    
-    expect(todos[0]).toEqual(todosBeforeToggle[0]);    
+
+    expect(todos[0]).toEqual(todosBeforeToggle[0]);
     expect(todos[2]).toEqual(todosBeforeToggle[2]);
     expect(todos[3]).toEqual(todosBeforeToggle[3]);
   });
 
-
   test("Expect no change when toggling on a non-existing task", () => {
     const todos = createMockTodos();
     const todosBeforeToggle = createMockTodos();
@@ -130,3 +128,30 @@ describe("toggleCompletedOnTask()", () => {
   });
 });
 
+describe("deleteCompleted()", () => {
+  test("Delete all completed tasks", () => {
+    const todos = createMockTodos();
+
+    Todos.deleteCompleted(todos);
+
+    expect(todos).toEqual([
+      { task: "Task 2 description", completed: false },
+      { task: "Task 4 description", completed: false },
+    ]);
+  });
+
+  test("Do nothing if there are no completed tasks", () => {
+    const todos = [
+      { task: "Task A", completed: false },
+      { task: "Task B", completed: false },
+    ];
+
+    Todos.deleteCompleted(todos);
+
+    expect(todos).toEqual([
+      { task: "Task A", completed: false },
+      { task: "Task B", completed: false },
+    ]);
+  });
+});
+
