diff --git a/lab-oop_in_python.ipynb b/lab-oop_in_python.ipynb
index 3142c5e..d2f9963 100644
--- a/lab-oop_in_python.ipynb
+++ b/lab-oop_in_python.ipynb
@@ -30,17 +30,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "300 20\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here\n",
     "class Vehicle:\n",
     "    # Hint: Define __init__ method with parameters for max_speed and mileage\n",
+    "    def __init__(self, max_speed, mileage):\n",
+    "        self.max_speed = max_speed\n",
+    "        self.mileage = mileage\n",
     "    pass\n",
     "\n",
     "# Example instantiation\n",
-    "modelX = Vehicle()  # Create an instance of Vehicle\n",
+    "modelX = Vehicle(300, 20)  # 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)"
@@ -56,25 +67,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 7,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "<class '__main__.Vehicle'>\n"
+      "<class '__main__.Vehicle'>\n",
+      "I don't get what it was supposed to do here, the whole exercise was already done?\n"
      ]
     }
    ],
    "source": [
-    "# Your code here\n",
+    "# this defines an empty class named Vehicle\n",
     "class Vehicle:\n",
     "    pass\n",
     "\n",
     "# Example instantiation\n",
     "my_vehicle = Vehicle()\n",
-    "print(type(my_vehicle))  # Expected output: <class '__main__.Vehicle'>"
+    "print(type(my_vehicle))  # Expected output: <class '__main__.Vehicle'>\n",
+    "print(\"I don't get what it was supposed to do here, the whole exercise was already done?\")\n",
+    "\n",
+    "# I don't get what it was supposed to do here, the whole exercise was already done?"
    ]
   },
   {
@@ -87,7 +102,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [
     {
@@ -118,14 +133,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Base fare\n"
+      "Base fare with extra charge\n"
      ]
     }
    ],
@@ -137,7 +152,11 @@
     "\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",
+    "        extra_charge = 10  # Example extra charge for bus\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 +172,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 10,
    "metadata": {},
    "outputs": [
     {
@@ -188,14 +207,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 18,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "Total Bus fare is: 5000\n"
+      "Total Bus fare is: 5500.0\n"
      ]
     }
    ],
@@ -212,9 +231,12 @@
     "\n",
     "class Bus(Vehicle):\n",
     "    # Hint: Override fare method to include maintenance charge\n",
-    "    pass\n",
+    "    def fare(self):\n",
+    "        base_fare = super().fare()\n",
+    "        total_fare = base_fare + (0.10 * base_fare)\n",
+    "        return total_fare\n",
     "\n",
-    "school_bus = Bus(\"School Volvo\", 12, 50)\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 +250,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [
     {
@@ -255,7 +277,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": 13,
    "metadata": {},
    "outputs": [
     {
@@ -287,7 +309,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": ".venv",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -301,7 +323,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.0"
+   "version": "3.13.7"
   }
  },
  "nbformat": 4,