diff --git a/lab-oop_in_python.ipynb b/lab-oop_in_python.ipynb
index 3142c5e..8caad8f 100644
--- a/lab-oop_in_python.ipynb
+++ b/lab-oop_in_python.ipynb
@@ -30,13 +30,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 15,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "0 0\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here\n",
     "class Vehicle:\n",
-    "    # Hint: Define __init__ method with parameters for max_speed and mileage\n",
+    "    max_speed = 0\n",
+    "    mileage = 0\n",
+    "\n",
+    "    def __init__(self, max_speed= 0 , mileage=0):\n",
+    "        self.max_speed = max_speed\n",
+    "        self.mileage = mileage\n",
     "    pass\n",
     "\n",
     "# Example instantiation\n",
@@ -56,7 +69,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
@@ -87,7 +100,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 17,
    "metadata": {},
    "outputs": [
     {
@@ -118,14 +131,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 20,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Base fare\n"
+      "Base fare with extra charge\n"
      ]
     }
    ],
@@ -137,6 +150,9 @@
     "\n",
     "class Bus(Vehicle):\n",
     "    # Hint: Override fare method to include extra charges\n",
+    "    def fare(self):\n",
+    "        parent_fare = super().fare()\n",
+    "        return parent_fare + \" with extra charge\"\n",
     "    pass\n",
     "\n",
     "school_bus = Bus()\n",
@@ -153,7 +169,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 21,
    "metadata": {},
    "outputs": [
     {
@@ -188,14 +204,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 23,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Total Bus fare is: 5000\n"
+      "Total Bus fare is: 5500.0\n"
      ]
     }
    ],
@@ -212,6 +228,10 @@
     "\n",
     "class Bus(Vehicle):\n",
     "    # Hint: Override fare method to include maintenance charge\n",
+    "    def fare(self):\n",
+    "        parent_fare = super().fare()\n",
+    "        total_fare = parent_fare + parent_fare*10/100\n",
+    "        return total_fare\n",
     "    pass\n",
     "\n",
     "school_bus = Bus(\"School Volvo\", 12, 50)\n",
@@ -228,7 +248,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 24,
    "metadata": {},
    "outputs": [
     {
@@ -255,7 +275,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 25,
    "metadata": {},
    "outputs": [
     {
@@ -287,7 +307,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": ".venv",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -301,7 +321,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.0"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,