diff --git a/lab-oop_in_python.ipynb b/lab-oop_in_python.ipynb
index 3142c5e..771655d 100644
--- a/lab-oop_in_python.ipynb
+++ b/lab-oop_in_python.ipynb
@@ -30,20 +30,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 17,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "120 0\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here\n",
     "class Vehicle:\n",
-    "    # Hint: Define __init__ method with parameters for max_speed and mileage\n",
-    "    pass\n",
+    "    def __init__(self, max_speed, mileage): # Hint: Define __init__ method with parameters for max_speed and mileage\n",
+    "        self.max_speed = max_speed\n",
+    "        self.mileage = mileage\n",
     "\n",
     "# Example instantiation\n",
-    "modelX = Vehicle()  # Create an instance of Vehicle\n",
+    "modelX = Vehicle(120, 0)  # Create an instance of Vehicle\n",
     "\n",
     "# Print attributes\n",
-    "print(modelX.max_speed, modelX.mileage)  # Expected output: (value of max_speed, value of mileage)"
+    "print(modelX.max_speed, modelX.mileage)  # Expected output: (value of max_speed, value of mileage)\n"
    ]
   },
   {
@@ -56,7 +65,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [
     {
@@ -87,7 +96,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 23,
    "metadata": {},
    "outputs": [
     {
@@ -100,12 +109,15 @@
    ],
    "source": [
     "# Your code here\n",
-    "class Bus(Vehicle):\n",
-    "    pass\n",
+    "class Bus(Vehicle): # bus = class\n",
+    "    def __init__(self, max_speed, mileage): # __init__ = main method, max speed & milage = arguments\n",
+    "        super().__init__()  # Call parent with NO arguments\n",
+    "        self.max_speed = max_speed # max speed argument \n",
+    "        self.mileage = mileage # \n",
     "\n",
     "# Example instantiation\n",
-    "school_bus = Bus()\n",
-    "print(type(school_bus))  # Expected output: <class '__main__.Bus'>"
+    "school_bus = Bus(65,100000) # school bus = object\n",
+    "print(type(school_bus))  # Expected output: <class '__main__.Bus'>\n"
    ]
   },
   {
@@ -118,14 +130,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 28,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Base fare\n"
+      "Base fare with extra charge\n"
      ]
     }
    ],
@@ -136,8 +148,10 @@
     "        return \"Base fare\"\n",
     "\n",
     "class Bus(Vehicle):\n",
-    "    # Hint: Override fare method to include extra charges\n",
-    "    pass\n",
+    "    def fare(self):\n",
+    "        base_fare = super().fare()\n",
+    "        return f\"{base_fare} with extra charge\"\n",
+    "    \n",
     "\n",
     "school_bus = Bus()\n",
     "print(school_bus.fare())  # Expected output: \"Base fare with extra charge\""
@@ -153,7 +167,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 29,
    "metadata": {},
    "outputs": [
     {
@@ -170,9 +184,10 @@
     "    color = \"White\"  # Hint: Define color as a class attribute\n",
     "\n",
     "    def __init__(self, name, max_speed, mileage):\n",
-    "        self.name = name\n",
-    "        self.max_speed = max_speed\n",
-    "        self.mileage = mileage\n",
+    "        self.name = name # attribute \n",
+    "        self.max_speed = max_speed # attribute \n",
+    "        self.mileage = mileage # attribute \n",
+    "        self.color = \"White\"\n",
     "\n",
     "school_bus = Vehicle(\"School Volvo\", 180, 12)\n",
     "print(school_bus.color)  # Expected output: \"White\""
@@ -188,14 +203,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 31,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Total Bus fare is: 5000\n"
+      "Total Bus fare is: 5500.0\n"
      ]
     }
    ],
@@ -212,7 +227,9 @@
     "\n",
     "class Bus(Vehicle):\n",
     "    # Hint: Override fare method to include maintenance charge\n",
-    "    pass\n",
+    "    def fare(self):\n",
+    "        extra_fare = (super().fare() * 0.1) + super().fare()\n",
+    "        return extra_fare\n",
     "\n",
     "school_bus = Bus(\"School Volvo\", 12, 50)\n",
     "print(\"Total Bus fare is:\", school_bus.fare())  # Expected output: Total Bus fare is: (calculated amount)"
@@ -228,7 +245,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 32,
    "metadata": {},
    "outputs": [
     {
@@ -241,7 +258,7 @@
    ],
    "source": [
     "# Your code here\n",
-    "school_bus = Bus(\"School Volvo\", 12, 50)\n",
+    "school_bus = Bus(\"School Volvo\", 12, 50) # this is our object\n",
     "print(type(school_bus))  # Expected output: <class '__main__.Bus'>"
    ]
   },
@@ -255,7 +272,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 33,
    "metadata": {},
    "outputs": [
     {
@@ -287,7 +304,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": ".venv",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -301,7 +318,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.0"
+   "version": "3.13.3"
   }
  },
  "nbformat": 4,