diff --git a/lab-oop_in_python.ipynb b/lab-oop_in_python.ipynb
index 3142c5e..4d795d9 100644
--- a/lab-oop_in_python.ipynb
+++ b/lab-oop_in_python.ipynb
@@ -1,309 +1,366 @@
 {
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# LAB | Object-Oriented Programming (OOP) in Python"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "## Overview\n",
-    "This exercise notebook will help you practice Object-Oriented Programming concepts in Python. You will create classes, instantiate objects, and use inheritance to build more complex structures.\n",
-    "\n",
-    "## Instructions\n",
-    "- Complete each exercise by writing the appropriate code in the provided space.\n",
-    "- Test your code to ensure it works as expected.\n",
-    "- Use the hints provided if you get stuck."
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 1: Create a Class with Instance Attributes\n",
-    "Write a Python program to create a `Vehicle` class with `max_speed` and `mileage` instance attributes."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# Your code here\n",
-    "class Vehicle:\n",
-    "    # Hint: Define __init__ method with parameters for max_speed and mileage\n",
-    "    pass\n",
-    "\n",
-    "# Example instantiation\n",
-    "modelX = Vehicle()  # 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)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 2: Create a Vehicle Class Without Any Variables and Methods\n",
-    "Create a `Vehicle` class without any variables or methods."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {},
-   "outputs": [
+  "cells": [
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "<class '__main__.Vehicle'>\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "class Vehicle:\n",
-    "    pass\n",
-    "\n",
-    "# Example instantiation\n",
-    "my_vehicle = Vehicle()\n",
-    "print(type(my_vehicle))  # Expected output: <class '__main__.Vehicle'>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 3: Create a Child Class Bus\n",
-    "Create a child class `Bus` that will inherit all of the variables and methods of the `Vehicle` class."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "ER0PED4rOASy"
+      },
+      "source": [
+        "# LAB | Object-Oriented Programming (OOP) in Python"
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "<class '__main__.Bus'>\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "class Bus(Vehicle):\n",
-    "    pass\n",
-    "\n",
-    "# Example instantiation\n",
-    "school_bus = Bus()\n",
-    "print(type(school_bus))  # Expected output: <class '__main__.Bus'>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 4: Class Inheritance with Method Overriding\n",
-    "Create a `Bus` class that inherits from the `Vehicle` class. Override the `fare()` method to include an extra charge for maintenance."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "W0uF_qjbOAS0"
+      },
+      "source": [
+        "## Overview\n",
+        "This exercise notebook will help you practice Object-Oriented Programming concepts in Python. You will create classes, instantiate objects, and use inheritance to build more complex structures.\n",
+        "\n",
+        "## Instructions\n",
+        "- Complete each exercise by writing the appropriate code in the provided space.\n",
+        "- Test your code to ensure it works as expected.\n",
+        "- Use the hints provided if you get stuck."
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Base fare\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "class Vehicle:\n",
-    "    def fare(self):\n",
-    "        return \"Base fare\"\n",
-    "\n",
-    "class Bus(Vehicle):\n",
-    "    # Hint: Override fare method to include extra charges\n",
-    "    pass\n",
-    "\n",
-    "school_bus = Bus()\n",
-    "print(school_bus.fare())  # Expected output: \"Base fare with extra charge\""
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 5: Define a Class Attribute\n",
-    "Define a property that must have the same value for every class instance (object). Set a default value for `color`."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "eU85J9DVOAS0"
+      },
+      "source": [
+        "### Exercise 1: Create a Class with Instance Attributes\n",
+        "Write a Python program to create a `Vehicle` class with `max_speed` and `mileage` instance attributes."
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "White\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "class Vehicle:\n",
-    "    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",
-    "\n",
-    "school_bus = Vehicle(\"School Volvo\", 180, 12)\n",
-    "print(school_bus.color)  # Expected output: \"White\""
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 6: Class Inheritance with Default Fare Calculation\n",
-    "Create a `Bus` child class that inherits from the `Vehicle` class. The default fare charge of any vehicle is `seating capacity * 100`. If the vehicle is a bus instance, add an extra 10% on the full fare as a maintenance charge."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 6,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "7dd845fAOAS1"
+      },
+      "outputs": [],
+      "source": [
+        "# Exercise 1\n",
+        "class Vehicle:\n",
+        "    # Constructor with instance attributes\n",
+        "    def __init__(self, max_speed, mileage):\n",
+        "        self.max_speed = max_speed\n",
+        "        self.mileage = mileage\n",
+        "\n",
+        "# Example instantiation\n",
+        "modelX = Vehicle(240, 18)\n",
+        "\n",
+        "# Print attributes\n",
+        "print(modelX.max_speed, modelX.mileage)  # Expected output: 240 18\n"
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "Total Bus fare is: 5000\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "class Vehicle:\n",
-    "    def __init__(self, name, mileage, capacity):\n",
-    "        self.name = name\n",
-    "        self.mileage = mileage\n",
-    "        self.capacity = capacity\n",
-    "\n",
-    "    def fare(self):\n",
-    "        return self.capacity * 100\n",
-    "\n",
-    "class Bus(Vehicle):\n",
-    "    # Hint: Override fare method to include maintenance charge\n",
-    "    pass\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)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 7: Check Type of an Object\n",
-    "Write a program to determine which class a given object belongs to."
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 7,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "RBgwBNHuOAS1"
+      },
+      "source": [
+        "### Exercise 2: Create a Vehicle Class Without Any Variables and Methods\n",
+        "Create a `Vehicle` class without any variables or methods."
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "<class '__main__.Bus'>\n"
-     ]
-    }
-   ],
-   "source": [
-    "# Your code here\n",
-    "school_bus = Bus(\"School Volvo\", 12, 50)\n",
-    "print(type(school_bus))  # Expected output: <class '__main__.Bus'>"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise 8: Check Instance of Class \n",
-    "Determine if `school_bus` is also an instance of the `Vehicle` class.\n"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 8,
-   "metadata": {},
-   "outputs": [
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "ROko3466OAS2",
+        "outputId": "5fed7e0a-0077-43b4-ccc0-0472f3f31d94"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "<class '__main__.Vehicle'>\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 2\n",
+        "class Vehicle:\n",
+        "    pass\n",
+        "\n",
+        "# Example instantiation\n",
+        "my_vehicle = Vehicle()\n",
+        "print(type(my_vehicle))  # Expected output: <class '__main__.Vehicle'>\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "P0E-4xDeOAS2"
+      },
+      "source": [
+        "### Exercise 3: Create a Child Class Bus\n",
+        "Create a child class `Bus` that will inherit all of the variables and methods of the `Vehicle` class."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "_2BZAtdOOAS2",
+        "outputId": "4d402ddb-0e7a-43ab-9a71-b59f9106e299"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "<class '__main__.Bus'>\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 3\n",
+        "class Vehicle:\n",
+        "    pass\n",
+        "\n",
+        "class Bus(Vehicle):\n",
+        "    pass\n",
+        "\n",
+        "# Example instantiation\n",
+        "school_bus = Bus()\n",
+        "print(type(school_bus))  # Expected output: <class '__main__.Bus'>\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "Ly02X4vaOAS3"
+      },
+      "source": [
+        "### Exercise 4: Class Inheritance with Method Overriding\n",
+        "Create a `Bus` class that inherits from the `Vehicle` class. Override the `fare()` method to include an extra charge for maintenance."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "6X5jWT3xOAS3",
+        "outputId": "7ade6c71-5536-41f8-b754-7a0a0ab88fbd"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "Base fare\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 4\n",
+        "class Vehicle:\n",
+        "    def fare(self):\n",
+        "        return \"Base fare\"\n",
+        "\n",
+        "class Bus(Vehicle):\n",
+        "    # Override fare method\n",
+        "    def fare(self):\n",
+        "        return super().fare() + \" with extra charge\"\n",
+        "\n",
+        "school_bus = Bus()\n",
+        "print(school_bus.fare())  # Expected output: \"Base fare with extra charge\"\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "jA_V0bxvOAS3"
+      },
+      "source": [
+        "### Exercise 5: Define a Class Attribute\n",
+        "Define a property that must have the same value for every class instance (object). Set a default value for `color`."
+      ]
+    },
     {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "True\n"
-     ]
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "ISZdRMJ8OAS3",
+        "outputId": "9b97a9b5-871a-4463-e98f-a18090cd6a62"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "White\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 5\n",
+        "class Vehicle:\n",
+        "    color = \"White\"  # Class attribute shared by all instances\n",
+        "\n",
+        "    def __init__(self, name, max_speed, mileage):\n",
+        "        self.name = name\n",
+        "        self.max_speed = max_speed\n",
+        "        self.mileage = mileage\n",
+        "\n",
+        "school_bus = Vehicle(\"School Volvo\", 180, 12)\n",
+        "print(school_bus.color)  # Expected output: \"White\"\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "OFea9qJLOAS3"
+      },
+      "source": [
+        "### Exercise 6: Class Inheritance with Default Fare Calculation\n",
+        "Create a `Bus` child class that inherits from the `Vehicle` class. The default fare charge of any vehicle is `seating capacity * 100`. If the vehicle is a bus instance, add an extra 10% on the full fare as a maintenance charge."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "V8wm20tdOAS4",
+        "outputId": "088c7351-3ba0-42be-ce30-2ee562fc9b51"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "Total Bus fare is: 5000\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 6\n",
+        "class Vehicle:\n",
+        "    def __init__(self, name, mileage, capacity):\n",
+        "        self.name = name\n",
+        "        self.mileage = mileage\n",
+        "        self.capacity = capacity\n",
+        "\n",
+        "    def fare(self):\n",
+        "        return self.capacity * 100\n",
+        "\n",
+        "class Bus(Vehicle):\n",
+        "    # Override fare method\n",
+        "    def fare(self):\n",
+        "        base_fare = super().fare()\n",
+        "        total_fare = base_fare + (0.1 * base_fare)  # Add 10% maintenance charge\n",
+        "        return total_fare\n",
+        "\n",
+        "school_bus = Bus(\"School Volvo\", 12, 50)\n",
+        "print(\"Total Bus fare is:\", school_bus.fare())  # Expected: Total Bus fare is: 5500.0\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "SmcUV2wrOAS4"
+      },
+      "source": [
+        "### Exercise 7: Check Type of an Object\n",
+        "Write a program to determine which class a given object belongs to."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "-90A0F6SOAS4",
+        "outputId": "a0a7b35d-bfa4-4433-f9c7-83118ae6991f"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "<class '__main__.Bus'>\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 7\n",
+        "school_bus = Bus(\"School Volvo\", 12, 50)\n",
+        "print(type(school_bus))  # Expected output: <class '__main__.Bus'>\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "_hlIS98hOAS4"
+      },
+      "source": [
+        "### Exercise 8: Check Instance of Class\n",
+        "Determine if `school_bus` is also an instance of the `Vehicle` class.\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "8sh_tVwaOAS4",
+        "outputId": "7a58acdf-5e6b-4c4d-cbc9-e4feb2de12bb"
+      },
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "True\n"
+          ]
+        }
+      ],
+      "source": [
+        "# Exercise 8\n",
+        "print(isinstance(school_bus, Vehicle))  # Expected output: True\n"
+      ]
+    },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "loxB2EXOOAS4"
+      },
+      "source": [
+        "### Exercise Completion  \n",
+        "Once you have completed all exercises:\n",
+        "- Review your solutions.\n",
+        "- Ensure your code is well-documented with comments explaining your logic.\n",
+        "- Save your notebook for submission or further review.\n",
+        "\n",
+        "Happy coding! Enjoy exploring Object-Oriented Programming with Python!\n"
+      ]
+    }
+  ],
+  "metadata": {
+    "kernelspec": {
+      "display_name": ".venv",
+      "language": "python",
+      "name": "python3"
+    },
+    "language_info": {
+      "codemirror_mode": {
+        "name": "ipython",
+        "version": 3
+      },
+      "file_extension": ".py",
+      "mimetype": "text/x-python",
+      "name": "python",
+      "nbconvert_exporter": "python",
+      "pygments_lexer": "ipython3",
+      "version": "3.8.0"
+    },
+    "colab": {
+      "provenance": []
     }
-   ],
-   "source": [
-    "# Your code here\n",
-    "print(isinstance(school_bus, Vehicle))  # Expected output: True or False based on inheritance"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "### Exercise Completion  \n",
-    "Once you have completed all exercises:\n",
-    "- Review your solutions.\n",
-    "- Ensure your code is well-documented with comments explaining your logic.\n",
-    "- Save your notebook for submission or further review.\n",
-    "\n",
-    "Happy coding! Enjoy exploring Object-Oriented Programming with Python!\n"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": ".venv",
-   "language": "python",
-   "name": "python3"
   },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.0"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 2
-}
+  "nbformat": 4,
+  "nbformat_minor": 0
+}
\ No newline at end of file